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Andrew Heather
2016-06-28 16:59:01 +01:00
parent dd3fb6225f cabd03d05c
commit cc36db19de
28 changed files with 3714 additions and 611 deletions
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3
applications/utilities/postProcessing/noise/Make/options
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@ -1,6 +1,7 @@
EXE_INC = \
-I$(LIB_SRC)/randomProcesses/lnInclude \
-I$(LIB_SRC)/sampling/lnInclude
-I$(LIB_SRC)/sampling/lnInclude \
-I$(LIB_SRC)/surfMesh/lnInclude
EXE_LIBS = \
-lrandomProcesses \

185
applications/utilities/postProcessing/noise/noise.C
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@ -2,8 +2,8 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
\\/ M anipulation |
\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
\\/ M anipulation | Copyright (C) 2016 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -28,157 +28,104 @@ Group
grpPostProcessingUtilities
Description
Utility to perform noise analysis of pressure data using the noiseFFT
library.
Utility to perform noise analysis of pressure data.
Control settings are read from the $FOAM_CASE/system/noiseDict dictionary,
or user-specified dictionary using the -dict option. Pressure data is
read using a CSV reader:
The utility provides a light wrapper around the run-time selectable
noise model. Current options include:
- point, and
- surface noise.
\heading Usage
\heading Example usage
\verbatim
pRef 101325;
N 65536;
nw 100;
f1 25;
fU 10000;
graphFormat raw;
noiseModel surfaceNoise; // pointNoise
pressureData
surfaceNoiseCoeffs
{
fileName "pressureData"
nHeaderLine 1; // number of header lines
refColumn 0; // reference column index
componentColumns (1); // component column indices
separator " "; // optional (defaults to ",")
mergeSeparators no; // merge multiple separators
outOfBounds clamp; // optional out-of-bounds handling
interpolationScheme linear; // optional interpolation scheme
windowModel Hanning;
HanningCoeffs
{
// Window overlap percentage
overlapPercent 50;
symmetric yes;
extended yes;
// Optional number of windows, default = all available
nWindow 5;
}
// Input file
inputFile "postProcessing/faceSource1/surface/patch/patch.case";
// Surface reader
reader ensight;
// Surface writer
writer ensight;
// Collate times for ensight output - ensures geometry is only written once
writeOptions
{
ensight
{
collateTimes 1;
}
}
// Number of samples in sampling window
// Must be a power of 2, default = 2^16 (=65536)
N 4096;
// Write interval for FFT data, default = 1
fftWriteInterval 100;
}
\endverbatim
where
\table
Property | Description | Required | Default value
pRef | Reference pressure | no | 0
N | Number of samples in sampling window | no | 65536
nw | Number of sampling windows | no | 100
fl | Lower frequency band | no | 25
fU | Upper frequency band | no | 10000
graphFormat | Output graph format | no | raw
\endtable
Current graph outputs include:
- FFT of the pressure data
- narrow-band PFL (pressure-fluctuation level) spectrum
- one-third-octave-band PFL spectrum
- one-third-octave-band pressure spectrum
SeeAlso
CSV.H
noiseFFT.H
noiseModel.H
windowModel.H
\*---------------------------------------------------------------------------*/
#include "noiseFFT.H"
#include "argList.H"
#include "Time.H"
#include "functionObjectFile.H"
#include "CSV.H"
#include "noiseModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Foam::scalar checkUniformTimeStep(const scalarField& t)
{
// check that a uniform time step has been applied
scalar deltaT = -1.0;
if (t.size() > 1)
{
for (label i = 1; i < t.size(); i++)
{
scalar dT = t[i] - t[i-1];
if (deltaT < 0)
{
deltaT = dT;
}
if (mag(deltaT - dT) > SMALL)
{
FatalErrorInFunction
<< "Unable to process data with a variable time step"
<< exit(FatalError);
}
}
}
else
{
FatalErrorInFunction
<< "Unable to create FFT with a single value"
<< exit(FatalError);
}
return deltaT;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
int main(int argc, char *argv[])
{
argList::noParallel();
#include "addDictOption.H"
#include "setRootCase.H"
#include "createTime.H"
#include "createFields.H"
Info<< "Reading data file" << endl;
Function1Types::CSV<scalar> pData("pressure", dict, "Data");
// time history data
const scalarField t(pData.x());
// pressure data
const scalarField p(pData.y());
if (t.size() < N)
word dictName("noiseDict");
if (args.optionFound("dict"))
{
FatalErrorInFunction
<< "Block size N = " << N
<< " is larger than number of data = " << t.size()
<< exit(FatalError);
dictName = args["dict"];
}
Info<< " read " << t.size() << " values" << nl << endl;
IOdictionary dict
(
IOobject
(
dictName,
runTime.system(),
runTime,
IOobject::MUST_READ
)
);
Info<< "Creating noise FFT" << endl;
noiseFFT nfft(checkUniformTimeStep(t), p);
nfft -= pRef;
fileName baseFileName(pData.fName().lessExt());
graph Pf(nfft.RMSmeanPf(N, min(nfft.size()/N, nw)));
Info<< " Creating graph for " << Pf.title() << endl;
Pf.write(baseFileName + graph::wordify(Pf.title()), graphFormat);
graph Lf(nfft.Lf(Pf));
Info<< " Creating graph for " << Lf.title() << endl;
Lf.write(baseFileName + graph::wordify(Lf.title()), graphFormat);
graph Ldelta(nfft.Ldelta(Lf, f1, fU));
Info<< " Creating graph for " << Ldelta.title() << endl;
Ldelta.write(baseFileName + graph::wordify(Ldelta.title()), graphFormat);
graph Pdelta(nfft.Pdelta(Pf, f1, fU));
Info<< " Creating graph for " << Pdelta.title() << endl;
Pdelta.write(baseFileName + graph::wordify(Pdelta.title()), graphFormat);
autoPtr<noiseModel> model(noiseModel::New(dict));
model->calculate();
Info<< nl << "End\n" << endl;

2
etc/cshrc
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@ -31,7 +31,7 @@
#------------------------------------------------------------------------------
setenv WM_PROJECT OpenFOAM
setenv WM_PROJECT_VERSION plus
setenv WM_PROJECT_VERSION stage
################################################################################
# USER EDITABLE PART: Changes made here may be lost with the next upgrade

30
src/randomProcesses/Make/files
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@ -1,25 +1,31 @@
Kmesh = Kmesh
fft = fft
processes = processes
UOprocess = $(processes)/UOprocess
turbulence = turbulence
noise = noise
Kmesh = Kmesh
$(Kmesh)/Kmesh.C
fft = fft
$(fft)/fft.C
$(fft)/fftRenumber.C
$(fft)/calcEk.C
$(fft)/kShellIntegration.C
processes = processes
UOprocess = $(processes)/UOprocess
$(UOprocess)/UOprocess.C
turbulence = turbulence
$(turbulence)/turbGen.C
$(noise)/noiseFFT.C
noise = noise
$(noise)/noiseFFT/noiseFFT.C
$(noise)/noiseModels/noiseModel/noiseModel.C
$(noise)/noiseModels/noiseModel/noiseModelNew.C
$(noise)/noiseModels/pointNoise/pointNoise.C
$(noise)/noiseModels/surfaceNoise/surfaceNoise.C
windowModels = windowModels
$(windowModels)/windowModel/windowModel.C
$(windowModels)/windowModel/windowModelNew.C
$(windowModels)/Hanning/Hanning.C
LIB = $(FOAM_LIBBIN)/librandomProcesses

8
src/randomProcesses/Make/options
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@ -1,5 +1,9 @@
EXE_INC = \
-I$(LIB_SRC)/finiteVolume/lnInclude
-I$(LIB_SRC)/finiteVolume/lnInclude \
-I$(LIB_SRC)/sampling/lnInclude \
-I$(LIB_SRC)/surfMesh/lnInclude
LIB_LIBS = \
-lfiniteVolume
-lfiniteVolume \
-lsampling \
-lsurfMesh

454
src/randomProcesses/noise/noiseFFT.C
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@ -1,454 +0,0 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "noiseFFT.H"
#include "IFstream.H"
#include "DynamicList.H"
#include "fft.H"
#include "SubField.H"
#include "mathematicalConstants.H"
// * * * * * * * * * * * * * * Static Member Data * * * * * * * * * * * * * //
Foam::scalar Foam::noiseFFT::p0 = 2e-5;
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::noiseFFT::noiseFFT
(
const scalar deltat,
const scalarField& pressure
)
:
scalarField(pressure),
deltat_(deltat)
{}
Foam::noiseFFT::noiseFFT(const fileName& pFileName, const label skip)
:
scalarField(),
deltat_(0.0)
{
// Construct pressure data file
IFstream pFile(pFileName);
// Check pFile stream is OK
if (!pFile.good())
{
FatalErrorInFunction
<< "Cannot read file " << pFileName
<< exit(FatalError);
}
if (skip)
{
scalar dummyt, dummyp;
for (label i=0; i<skip; i++)
{
pFile >> dummyt;
if (!pFile.good() || pFile.eof())
{
FatalErrorInFunction
<< "Number of points in file " << pFileName
<< " is less than the number to be skipped = " << skip
<< exit(FatalError);
}
pFile >> dummyp;
}
}
scalar t = 0, T = 0;
DynamicList<scalar> pData(100000);
label i = 0;
while (!(pFile >> t).eof())
{
T = t;
pFile >> pData(i++);
}
deltat_ = T/pData.size();
this->transfer(pData);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::graph Foam::noiseFFT::pt() const
{
scalarField t(size());
forAll(t, i)
{
t[i] = i*deltat_;
}
return graph
(
"p(t)",
"t [s]",
"p(t) [Pa]",
t,
*this
);
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::window
(
const label N,
const label ni
) const
{
label windowOffset = N;
if ((N + ni*windowOffset) > size())
{
FatalErrorInFunction
<< "Requested window is outside set of data" << endl
<< "number of data = " << size() << endl
<< "size of window = " << N << endl
<< "window = " << ni
<< exit(FatalError);
}
tmp<scalarField> tpw(new scalarField(N));
scalarField& pw = tpw.ref();
label offset = ni*windowOffset;
forAll(pw, i)
{
pw[i] = operator[](i + offset);
}
return tpw;
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::Hanning(const label N) const
{
scalarField t(N);
forAll(t, i)
{
t[i] = i*deltat_;
}
scalar T = N*deltat_;
return 2*(0.5 - 0.5*cos(constant::mathematical::twoPi*t/T));
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::Pf
(
const tmp<scalarField>& tpn
) const
{
tmp<scalarField> tPn2
(
mag
(
fft::reverseTransform
(
ReComplexField(tpn),
labelList(1, tpn().size())
)
)
);
tpn.clear();
tmp<scalarField> tPn
(
new scalarField
(
scalarField::subField(tPn2(), tPn2().size()/2)
)
);
scalarField& Pn = tPn.ref();
Pn *= 2.0/sqrt(scalar(tPn2().size()));
Pn[0] /= 2.0;
return tPn;
}
Foam::graph Foam::noiseFFT::meanPf
(
const label N,
const label nw
) const
{
if (N > size())
{
FatalErrorInFunction
<< "Requested window is outside set of data" << nl
<< "number of data = " << size() << nl
<< "size of window = " << N << nl
<< "window = " << nw
<< exit(FatalError);
}
scalarField MeanPf(N/2, 0.0);
scalarField Hwf(Hanning(N));
for (label wi=0; wi<nw; ++wi)
{
MeanPf += Pf(Hwf*window(N, wi));
}
MeanPf /= nw;
scalarField f(MeanPf.size());
scalar deltaf = 1.0/(N*deltat_);
forAll(f, i)
{
f[i] = i*deltaf;
}
return graph
(
"P(f)",
"f [Hz]",
"P(f) [Pa]",
f,
MeanPf
);
}
Foam::graph Foam::noiseFFT::RMSmeanPf
(
const label N,
const label nw
) const
{
if (N > size())
{
FatalErrorInFunction
<< "Requested window is outside set of data" << endl
<< "number of data = " << size() << endl
<< "size of window = " << N << endl
<< "window = " << nw
<< exit(FatalError);
}
scalarField RMSMeanPf(N/2, 0.0);
scalarField Hwf(Hanning(N));
for (label wi=0; wi<nw; ++wi)
{
RMSMeanPf += sqr(Pf(Hwf*window(N, wi)));
}
RMSMeanPf = sqrt(RMSMeanPf/nw);
scalarField f(RMSMeanPf.size());
scalar deltaf = 1.0/(N*deltat_);
forAll(f, i)
{
f[i] = i*deltaf;
}
return graph
(
"P(f)",
"f [Hz]",
"P(f) [Pa]",
f,
RMSMeanPf
);
}
Foam::graph Foam::noiseFFT::Lf(const graph& gPf) const
{
return graph
(
"L(f)",
"f [Hz]",
"L(f) [dB]",
gPf.x(),
20*log10(gPf.y()/p0)
);
}
Foam::graph Foam::noiseFFT::Ldelta
(
const graph& gLf,
const scalar f1,
const scalar fU
) const
{
const scalarField& f = gLf.x();
const scalarField& Lf = gLf.y();
scalarField ldelta(Lf.size(), 0.0);
scalarField fm(ldelta.size());
scalar fratio = cbrt(2.0);
scalar deltaf = 1.0/(2*Lf.size()*deltat_);
scalar fl = f1/sqrt(fratio);
scalar fu = fratio*fl;
label istart = label(fl/deltaf);
label j = 0;
for (label i = istart; i<Lf.size(); i++)
{
scalar fmi = sqrt(fu*fl);
if (fmi > fU + 1) break;
if (f[i] >= fu)
{
fm[j] = fmi;
ldelta[j] = 10*log10(ldelta[j]);
j++;
fl = fu;
fu *= fratio;
}
ldelta[j] += pow(10, Lf[i]/10.0);
}
fm.setSize(j);
ldelta.setSize(j);
return graph
(
"Ldelta",
"fm [Hz]",
"Ldelta [dB]",
fm,
ldelta
);
}
Foam::graph Foam::noiseFFT::Pdelta
(
const graph& gPf,
const scalar f1,
const scalar fU
) const
{
const scalarField& f = gPf.x();
const scalarField& Pf = gPf.y();
scalarField pdelta(Pf.size(), 0.0);
scalarField fm(pdelta.size());
scalar fratio = cbrt(2.0);
scalar deltaf = 1.0/(2*Pf.size()*deltat_);
scalar fl = f1/sqrt(fratio);
scalar fu = fratio*fl;
label istart = label(fl/deltaf + 1.0 - SMALL);
label j = 0;
for (label i = istart; i<Pf.size(); i++)
{
scalar fmi = sqrt(fu*fl);
if (fmi > fU + 1) break;
if (f[i] >= fu)
{
fm[j] = fmi;
pdelta[j] = sqrt((2.0/3.0)*pdelta[j]);
j++;
fl = fu;
fu *= fratio;
}
pdelta[j] += sqr(Pf[i]);
}
fm.setSize(j);
pdelta.setSize(j);
return graph
(
"Pdelta",
"fm [Hz]",
"Pdelta [dB]",
fm,
pdelta
);
}
Foam::scalar Foam::noiseFFT::Lsum(const graph& gLf) const
{
const scalarField& Lf = gLf.y();
scalar lsum = 0.0;
forAll(Lf, i)
{
lsum += pow(10, Lf[i]/10.0);
}
lsum = 10*log10(lsum);
return lsum;
}
Foam::scalar Foam::noiseFFT::dbToPa(const scalar db) const
{
return p0*pow(10.0, db/20.0);
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::dbToPa
(
const tmp<scalarField>& db
) const
{
return p0*pow(10.0, db/20.0);
}
// ************************************************************************* //

519
src/randomProcesses/noise/noiseFFT/noiseFFT.C Normal file
View File

@ -0,0 +1,519 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
\\/ M anipulation | Copyright (C) 2016 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "noiseFFT.H"
#include "IFstream.H"
#include "DynamicList.H"
#include "fft.H"
#include "SubField.H"
#include "mathematicalConstants.H"
using namespace Foam::constant;
// * * * * * * * * * * * * * * Static Member Data * * * * * * * * * * * * * //
Foam::scalar Foam::noiseFFT::p0 = 2e-5;
Foam::tmp<Foam::scalarField> Foam::noiseFFT::frequencies
(
const label N,
const scalar deltaT
)
{
tmp<scalarField> tf(new scalarField(N/2, 0));
scalarField& f = tf();
scalar deltaf = 1.0/(N*deltaT);
forAll(f, i)
{
f[i] = i*deltaf;
}
return tf;
}
void Foam::noiseFFT::octaveFrequenciesIDs
(
const scalarField& f,
const scalar fLower,
const scalar fUpper,
const scalar octave,
labelList& freqBandIDs
)
{
// Set the indices of to the lower frequency bands for the input frequency
// range. Ensure that the centre frequency passes though 1000 Hz
// Low frequency bound given by:
// fLow = f0*(2^(bandI/octave/2))
// Centre frequency given by:
// fCentre = f0*(2^(bandI/octave))
scalar f0 = 1000;
scalar minFrequency = max(fLower, min(f));
// Lower frequency band limit
label band0Low = ceil(2*octave*log(minFrequency/f0)/log(2.0));
// Centre frequency band limit
//label band0Centre = ceil(octave*log(fLower/f0)/log(2.0));
scalar fLowerBand = f0*pow(2, band0Low/octave/2);
scalar fRatio = pow(2, 1.0/octave);
bool complete = false;
DynamicList<label> bandIDs(f.size());
forAll(f, i)
{
while (f[i] >= fLowerBand)
{
bandIDs.append(i);
fLowerBand *= fRatio;
if (fLowerBand > fUpper)
{
complete = true;
break;
}
}
if (complete) break;
}
freqBandIDs.transfer(bandIDs);
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::octaveFrequencies
(
const scalarField& f,
const scalar fLower,
const scalar fUpper,
const scalar octave
)
{
labelList freqBandIDs;
octaveFrequenciesIDs(f, fLower, fUpper, octave, freqBandIDs);
tmp<scalarField> tf(new scalarField(f, freqBandIDs));
return tf;
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::noiseFFT::noiseFFT
(
const scalar deltaT,
const scalarField& pressure
)
:
scalarField(pressure),
deltaT_(deltaT)
{}
Foam::noiseFFT::noiseFFT(const fileName& pFileName, const label skip)
:
scalarField(),
deltaT_(0.0)
{
// Construct pressure data file
IFstream pFile(pFileName);
// Check pFile stream is OK
if (!pFile.good())
{
FatalErrorInFunction
<< "Cannot read file " << pFileName
<< exit(FatalError);
}
if (skip)
{
scalar dummyt, dummyp;
for (label i = 0; i < skip; i++)
{
pFile >> dummyt;
if (!pFile.good() || pFile.eof())
{
FatalErrorInFunction
<< "Number of points in file " << pFileName
<< " is less than the number to be skipped = " << skip
<< exit(FatalError);
}
pFile >> dummyp;
}
}
scalar t = 0, T0 = 0, T1 = 0;
DynamicList<scalar> pData(100000);
label i = 0;
while (!(pFile >> t).eof())
{
if (i == 0)
{
T0 = t;
}
T1 = t;
pFile >> pData(i++);
}
// Note: assumes fixed time step
deltaT_ = (T1 - T0)/pData.size();
this->transfer(pData);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::graph Foam::noiseFFT::pt() const
{
scalarField t(size());
forAll(t, i)
{
t[i] = i*deltaT_;
}
return graph
(
"p(t)",
"t [s]",
"p(t) [Pa]",
t,
*this
);
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::Pf
(
const tmp<scalarField>& tpn
) const
{
tmp<scalarField> tPn2
(
mag
(
fft::reverseTransform
(
ReComplexField(tpn),
labelList(1, tpn().size())
)
)
);
tpn.clear();
tmp<scalarField> tPn
(
new scalarField
(
scalarField::subField(tPn2(), tPn2().size()/2)
)
);
scalarField& Pn = tPn();
Pn *= 2.0/sqrt(scalar(tPn2().size()));
Pn[0] /= 2.0;
return tPn;
}
Foam::graph Foam::noiseFFT::meanPf(const windowModel& window) const
{
const label N = window.nSamples();
const label nWindow = window.nWindow();
scalarField meanPf(N/2, 0.0);
for (label windowI = 0; windowI < nWindow; ++windowI)
{
meanPf += Pf(window.apply<scalar>(*this, windowI));
}
meanPf /= scalar(nWindow);
scalar deltaf = 1.0/(N*deltaT_);
scalarField f(meanPf.size());
forAll(f, i)
{
f[i] = i*deltaf;
}
return graph
(
"P(f)",
"f [Hz]",
"P(f) [Pa]",
f,
meanPf
);
}
Foam::graph Foam::noiseFFT::RMSmeanPf(const windowModel& window) const
{
const label N = window.nSamples();
const label nWindow = window.nWindow();
scalarField RMSMeanPf(N/2, 0.0);
for (label windowI = 0; windowI < nWindow; ++windowI)
{
RMSMeanPf += sqr(Pf(window.apply<scalar>(*this, windowI)));
}
RMSMeanPf = sqrt(RMSMeanPf/scalar(nWindow));
scalar deltaf = 1.0/(N*deltaT_);
scalarField f(RMSMeanPf.size());
forAll(f, i)
{
f[i] = i*deltaf;
}
return graph
(
"P(f)",
"f [Hz]",
"P(f) [Pa]",
f,
RMSMeanPf
);
}
Foam::graph Foam::noiseFFT::PSDf(const windowModel& window) const
{
const label N = window.nSamples();
const label nWindow = window.nWindow();
scalarField psd(N/2, 0.0);
for (label windowI = 0; windowI < nWindow; ++windowI)
{
psd += 0.5*sqr(Pf(window.apply<scalar>(*this, windowI)));
}
scalar deltaf = 1.0/(N*deltaT_);
psd /= nWindow*deltaf;
scalarField f(psd.size());
forAll(f, i)
{
f[i] = i*deltaf;
}
return graph
(
"PSD(f)",
"f [Hz]",
"PSD(f) [PaPa_Hz]",
f,
psd
);
}
Foam::graph Foam::noiseFFT::PSD(const graph& gPSD) const
{
return graph
(
"PSD(dB)",
"f [Hz]",
"PSD_dB(f) [dB]",
gPSD.x(),
10*log10(gPSD.y()/sqr(p0))
);
}
Foam::graph Foam::noiseFFT::Lf(const graph& gPf) const
{
return graph
(
"L(f)",
"f [Hz]",
"L(f) [dB]",
gPf.x(),
20*log10(gPf.y()/p0)
);
}
Foam::graph Foam::noiseFFT::Ldelta
(
const graph& gLf,
const labelList& freqBandIDs
) const
{
if (freqBandIDs.size() < 2)
{
WarningInFunction
<< "Octave frequency bands are not defined "
<< "- skipping Ldelta calculation"
<< endl;
return graph
(
"Ldelta",
"fm [Hz]",
"Ldelta [dB]",
scalarField(),
scalarField()
);
}
const scalarField& f = gLf.x();
const scalarField& Lf = gLf.y();
scalarField ldelta(freqBandIDs.size() - 1, 0.0);
scalarField fm(freqBandIDs.size() -1, 0.0);
for (label bandI = 0; bandI < freqBandIDs.size() - 1; bandI++)
{
label f0 = freqBandIDs[bandI];
label f1 = freqBandIDs[bandI+1];
fm[bandI] = f[f0];
if (f0 == f1) continue;
for (label freqI = f0; freqI < f1; freqI++)
{
ldelta[bandI] += pow(10, Lf[freqI]/10.0);
}
ldelta[bandI] = 10*log10(ldelta[bandI]);
}
return graph
(
"Ldelta",
"fm [Hz]",
"Ldelta [dB]",
fm,
ldelta
);
}
Foam::graph Foam::noiseFFT::Pdelta
(
const graph& gPf,
const labelList& freqBandIDs
) const
{
if (freqBandIDs.size() < 2)
{
WarningInFunction
<< "Octave frequency bands are not defined "
<< "- skipping Pdelta calculation"
<< endl;
return graph
(
"Pdelta",
"fm [Hz]",
"Pdelta [dB]",
scalarField(),
scalarField()
);
}
const scalarField& f = gPf.x();
const scalarField& Pf = gPf.y();
scalarField pdelta(freqBandIDs.size() - 1, 0.0);
scalarField fm(pdelta.size());
for (label bandI = 0; bandI < freqBandIDs.size() - 1; bandI++)
{
label f0 = freqBandIDs[bandI];
label f1 = freqBandIDs[bandI+1];
fm[bandI] = f[f0];
if (f0 == f1) continue;
for (label freqI = f0; freqI < f1; freqI++)
{
pdelta[bandI] += sqr(Pf[freqI]);
}
pdelta[bandI] = sqrt((2.0/3.0)*pdelta[bandI]);
}
return graph
(
"Pdelta",
"fm [Hz]",
"Pdelta [dB]",
fm,
pdelta
);
}
Foam::scalar Foam::noiseFFT::Lsum(const graph& gLf) const
{
const scalarField& Lf = gLf.y();
scalar lsum = 0.0;
forAll(Lf, i)
{
lsum += pow(10, Lf[i]/10.0);
}
lsum = 10*log10(lsum);
return lsum;
}
Foam::scalar Foam::noiseFFT::dbToPa(const scalar db) const
{
return p0*pow(10.0, db/20.0);
}
Foam::tmp<Foam::scalarField> Foam::noiseFFT::dbToPa
(
const tmp<scalarField>& db
) const
{
return p0*pow(10.0, db/20.0);
}
// ************************************************************************* //

98
src/randomProcesses/noise/noiseFFT.H → src/randomProcesses/noise/noiseFFT/noiseFFT.H
View File

@ -2,8 +2,8 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\/ M anipulation |
\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
\\/ M anipulation | Copyright (C) 2016 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -25,11 +25,26 @@ Class
Foam::noiseFFT
Description
FFT of the pressure field
Performs FFT of pressure field to generate noise data.
General functionality:
- Pf: fft of the pressure data
- meanPf: multi-window mean fft
- RMSmeanPf: multi-window RMS mean fft
- PSDf: multi-window power spectral density (PSD) in frequency domain
- PSD: multi-window power spectral density (PSD) in dB
- Lf: narrow-band pressure-fluctuation level (PFL) in frequency domain
Octave-based data:
- Ldelta: PFL spectrum
- Pdelta: pressure spectrum
SourceFiles
noiseFFT.C
SeeAlso
windowModel.H
\*---------------------------------------------------------------------------*/
#ifndef noiseFFT_H
@ -37,6 +52,7 @@ SourceFiles
#include "scalarField.H"
#include "graph.H"
#include "windowModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
@ -44,7 +60,7 @@ namespace Foam
{
/*---------------------------------------------------------------------------*\
Class noiseFFT Declaration
Class noiseFFT Declaration
\*---------------------------------------------------------------------------*/
class noiseFFT
@ -54,7 +70,7 @@ class noiseFFT
// Private data
//- Time spacing of the raw data
scalar deltat_;
scalar deltaT_;
public:
@ -81,34 +97,72 @@ public:
// Member Functions
//- Return the FFT frequencies
static tmp<scalarField> frequencies
(
const label N,
const scalar deltaT
);
//- Return a list of the frequency indices wrt f field that
// correspond to the bands limits for a given octave
static void octaveFrequenciesIDs
(
const scalarField& f,
const scalar fLower,
const scalar fUpper,
const scalar octave,
labelList& freqBandIDs
);
//- Return the 1/octave octave frequency bounds
static tmp<scalarField> octaveFrequencies
(
const scalarField& f,
const scalar fLower,
const scalar fUpper,
const scalar octave
);
//- Return the graph of p(t)
graph pt() const;
//- Return the nth window
tmp<scalarField> window(const label N, const label n) const;
//- Return the Hanning window function
tmp<scalarField> Hanning(const label N) const;
//- Return the fft of the given pressure data
tmp<scalarField> Pf(const tmp<scalarField>& pn) const;
//- Return the multi-window mean fft of the complete pressure data
graph meanPf(const label N, const label nw) const;
//- Return the multi-window mean fft of the complete pressure data [Pa]
graph meanPf(const windowModel& window) const;
//- Return the multi-window RMS mean fft of the complete pressure data
graph RMSmeanPf(const label N, const label nw) const;
//- Return the multi-window RMS mean fft of the complete pressure
// data [Pa]
graph RMSmeanPf(const windowModel& window) const;
//- Return the narrow-band PFL (pressure-fluctuation level) spectrum
//- Return the multi-window PSD (power spectral density) of the complete
// pressure data [Pa^2/Hz]
graph PSDf(const windowModel& window) const;
//- Return the PSD [dB]
graph PSD(const graph& gPSD) const;
//- Return the narrow-band PFL (pressure-fluctuation level)
// spectrum [dB]
graph Lf(const graph& gPf) const;
//- Return the one-third-octave-band PFL spectrum
// starting at octave with mean frequency f1
graph Ldelta(const graph& gLf, const scalar f1, const scalar fU) const;
//- Return the octave-band PFL spectrum starting at octave
// frequencies given by the supplied frequency bands [dB]
graph Ldelta
(
const graph& gLf,
const labelList& freqBandIDs
) const;
//- Return the one-third-octave-band pressure spectrum
// starting at octave with mean frequency f1
graph Pdelta(const graph& gLf, const scalar f1, const scalar fU) const;
//- Return the octave-band pressure spectrum at octave
// frequencies given by the supplied frequency bands [dB]
graph Pdelta
(
const graph& gLf,
const labelList& freqBandIDs
) const;
//- Return the total PFL as the sum of Lf over all frequencies
scalar Lsum(const graph& gLf) const;

150
src/randomProcesses/noise/noiseModels/noiseModel/noiseModel.C Normal file
View File

@ -0,0 +1,150 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "noiseModel.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(noiseModel, 0);
defineRunTimeSelectionTable(noiseModel, dictionary);
}
// * * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * //
Foam::scalar Foam::noiseModel::checkUniformTimeStep
(
const scalarList& times
) const
{
scalar deltaT = -1.0;
if (times.size() > 1)
{
for (label i = 1; i < times.size(); i++)
{
scalar dT = times[i] - times[i-1];
if (deltaT < 0)
{
deltaT = dT;
}
if (mag(deltaT - dT) > SMALL)
{
FatalErrorInFunction
<< "Unable to process data with a variable time step"
<< exit(FatalError);
}
}
}
else
{
FatalErrorInFunction
<< "Unable to create FFT with a single value"
<< exit(FatalError);
}
return deltaT;
}
Foam::label Foam::noiseModel::findStartTimeIndex
(
const instantList& allTimes,
const scalar startTime
) const
{
forAll(allTimes, timeI)
{
const instant& i = allTimes[timeI];
if (i.value() >= startTime)
{
return timeI;
}
}
return 0;
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::noiseModel::noiseModel(const dictionary& dict)
:
dict_(dict),
pRef_(dict.lookupOrDefault("pRef", 0)),
nSamples_(dict.lookupOrDefault("N", 65536)),
fLower_(dict.lookupOrDefault("fl", 25)),
fUpper_(dict.lookupOrDefault("fu", 10000)),
startTime_(dict.lookupOrDefault("startTime", 0)),
windowModelPtr_(windowModel::New(dict, nSamples_))
{
// Check number of samples - must be a power of 2 for our FFT
bool powerOf2 = ((nSamples_ != 0) && !(nSamples_ & (nSamples_ - 1)));
if (!powerOf2)
{
FatalIOErrorInFunction(dict)
<< "N: Number of samples in sampling windows must be a "
<< "power of 2"
<< exit(FatalIOError);
}
if (fLower_ < 0)
{
FatalIOErrorInFunction(dict)
<< "fl: lower frequency bound must be greater than zero"
<< exit(FatalIOError);
}
if (fUpper_ < 0)
{
FatalIOErrorInFunction(dict)
<< "fu: upper frequency bound must be greater than zero"
<< exit(FatalIOError);
}
if (fUpper_ < fLower_)
{
FatalIOErrorInFunction(dict)
<< "fu: upper frequency bound must be greater than lower "
<< "frequency bound (fl)"
<< exit(FatalIOError);
}
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::noiseModel::~noiseModel()
{}
// ************************************************************************* //

175
src/randomProcesses/noise/noiseModels/noiseModel/noiseModel.H Normal file
View File

@ -0,0 +1,175 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::noiseModel
Description
Base class for noise models.
Data is read from a dictionary, e.g.
\verbatim
pRef 0;
N 4096;
fl 25;
fu 25;
startTime 0;
\endverbatim
where
\table
Property | Description | Required | Default value
pRef | Reference pressure | no | 0
N | Number of samples in sampling window | no | 65536 (2^16)
fl | Lower frequency bounds | no | 25
fu | Upper frequency bounds | no | 10000
\endtable
Note
The number of samples in the sampling window must be a power of 2
SourceFiles
noiseModel.C
\*---------------------------------------------------------------------------*/
#ifndef noiseModel_H
#define noiseModel_H
#include "dictionary.H"
#include "scalarList.H"
#include "instantList.H"
#include "windowModel.H"
#include "runTimeSelectionTables.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class noiseModel Declaration
\*---------------------------------------------------------------------------*/
class noiseModel
{
private:
// Private Member Functions
//- Disallow default bitwise copy construct
noiseModel(const noiseModel&);
//- Disallow default bitwise assignment
void operator=(const noiseModel&);
protected:
// Protected Data
//- Copy of dictionary used for construction
const dictionary dict_;
//- Reference pressure
scalar pRef_;
//- Number of samples in sampling window, default = 2^16
label nSamples_;
//- Lower frequency limit, default = 25Hz
scalar fLower_;
//- Upper frequency limit, default = 10kHz
scalar fUpper_;
//- Start time, default = 0s
scalar startTime_;
//- Window model
autoPtr<windowModel> windowModelPtr_;
// Protected Member Functions
//- Check and return uniform time step
scalar checkUniformTimeStep
(
const scalarList& times
) const;
//- Find and return start time index
label findStartTimeIndex
(
const instantList& allTimes,
const scalar startTime
) const;
public:
//- Runtime type information
TypeName("noiseModel");
//- Run time selection table
declareRunTimeSelectionTable
(
autoPtr,
noiseModel,
dictionary,
(
const dictionary& dict
),
(dict)
);
//- Selector
static autoPtr<noiseModel> New(const dictionary& dict);
//- Constructor
noiseModel(const dictionary& dict);
//- Destructor
virtual ~noiseModel();
// Public Member Functions
//- Abstract call to calculate
virtual void calculate() = 0;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

53
src/randomProcesses/noise/noiseModels/noiseModel/noiseModelNew.C Normal file
View File

@ -0,0 +1,53 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "noiseModel.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::autoPtr<Foam::noiseModel> Foam::noiseModel::New(const dictionary& dict)
{
const word modelType(dict.lookup("noiseModel"));
Info<< "Selecting noiseModel " << modelType << endl;
dictionaryConstructorTable::iterator cstrIter =
dictionaryConstructorTablePtr_->find(modelType);
if (cstrIter == dictionaryConstructorTablePtr_->end())
{
FatalErrorInFunction
<< "Unknown noiseModel type "
<< modelType << nl << nl
<< "Valid noiseModel types are:" << nl
<< dictionaryConstructorTablePtr_->sortedToc()
<< exit(FatalError);
}
return autoPtr<noiseModel>(cstrIter()(dict.subDict(modelType + "Coeffs")));
}
// ************************************************************************* //

151
src/randomProcesses/noise/noiseModels/pointNoise/pointNoise.C Normal file
View File

@ -0,0 +1,151 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "pointNoise.H"
#include "noiseFFT.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace noiseModels
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(pointNoise, 0);
addToRunTimeSelectionTable(noiseModel, pointNoise, dictionary);
// * * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * //
void pointNoise::filterTimeData
(
const CSV<scalar>& pData,
scalarField& t,
scalarField& p
)
{
const scalarField t0(pData.x());
const scalarField p0(pData.y());
DynamicList<scalar> tf(t0.size());
DynamicList<scalar> pf(t0.size());
forAll(t0, timeI)
{
if (t0[timeI] >= startTime_)
{
tf.append(t0[timeI]);
pf.append(p0[timeI]);
}
}
t.transfer(tf);
p.transfer(pf);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
void pointNoise::calculate()
{
// Point data only handled by master
if (!Pstream::master())
{
return;
}
Info<< "Reading data file" << endl;
CSV<scalar> pData("pressure", dict_, "Data");
fileName baseFileName(pData.fName().lessExt());
// Time and pressure history data
scalarField t, p;
filterTimeData(pData, t, p);
Info<< " read " << t.size() << " values" << nl << endl;
Info<< "Creating noise FFT" << endl;
const scalar deltaT = checkUniformTimeStep(t);
// Determine the windowing
windowModelPtr_->validate(t.size());
// Create the fft
noiseFFT nfft(deltaT, p);
nfft -= pRef_;
graph Pf(nfft.RMSmeanPf(windowModelPtr_()));
Info<< " Creating graph for " << Pf.title() << endl;
Pf.write(baseFileName + graph::wordify(Pf.title()), graphFormat_);
graph Lf(nfft.Lf(Pf));
Info<< " Creating graph for " << Lf.title() << endl;
Lf.write(baseFileName + graph::wordify(Lf.title()), graphFormat_);
graph PSDf(nfft.PSDf(windowModelPtr_()));
Info<< " Creating graph for " << PSDf.title() << endl;
PSDf.write(baseFileName + graph::wordify(PSDf.title()), graphFormat_);
graph PSD(nfft.PSD(PSDf));
Info<< " Creating graph for " << PSD.title() << endl;
PSD.write(baseFileName + graph::wordify(PSD.title()), graphFormat_);
labelList octave13BandIDs;
noiseFFT::octaveFrequenciesIDs(Pf.x(), fLower_, fUpper_, 3, octave13BandIDs);
graph Ldelta(nfft.Ldelta(Lf, octave13BandIDs));
Info<< " Creating graph for " << Ldelta.title() << endl;
Ldelta.write(baseFileName + graph::wordify(Ldelta.title()), graphFormat_);
graph Pdelta(nfft.Pdelta(Pf, octave13BandIDs));
Info<< " Creating graph for " << Pdelta.title() << endl;
Pdelta.write(baseFileName + graph::wordify(Pdelta.title()), graphFormat_);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
pointNoise::pointNoise(const dictionary& dict)
:
noiseModel(dict),
graphFormat_(dict.lookupOrDefault<word>("graphFormat", "raw"))
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
pointNoise::~pointNoise()
{}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace noiseModels
} // End namespace Foam
// ************************************************************************* //

148
src/randomProcesses/noise/noiseModels/pointNoise/pointNoise.H Normal file
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@ -0,0 +1,148 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::noiseModels::pointNoise
Description
Perform noise analysis on point-based pressure data.
Input data is read from a dictionary, e.g.
\verbatim
// Pressure reference
pRef 0;
// Number of samples in sampling window
// Must be a power of 2, default = 2^16 (=65536)
N 4096;
// Lower frequency bounds
fl 25;
// Upper frequency bounds
fu 25;
// Start time
startTime 0;
windowModel <modelType>
<modelType>Coeffs
{
...
}
// Pressure data supplied in CSV file format
csvFileData
{
fileName "pressureData";
nHeaderLine 1;
refColumn 0;
componentColumns (1);
separator " ";
mergeSeparators yes;
}
graphFormat raw;
\endverbatim
SourceFiles
pointNoise.C
SeeAlso
noiseModel.H
windowModel.H
\*---------------------------------------------------------------------------*/
#ifndef pointNoise_H
#define pointNoise_H
#include "noiseModel.H"
#include "CSV.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace noiseModels
{
/*---------------------------------------------------------------------------*\
Class pointNoise Declaration
\*---------------------------------------------------------------------------*/
class pointNoise
:
public noiseModel
{
protected:
// Protected data
//- Graph format
word graphFormat_;
// Protected Member Functions
void filterTimeData
(
const CSV<scalar>& pData,
scalarField& t,
scalarField& p
);
public:
//- Runtime type information
TypeName("pointNoise");
//- Constructor
pointNoise(const dictionary& dict);
//- Destructor
virtual ~pointNoise();
// Public Member Functions
//- Calculate
virtual void calculate();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace noiseModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

490
src/randomProcesses/noise/noiseModels/surfaceNoise/surfaceNoise.C Normal file
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@ -0,0 +1,490 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "surfaceNoise.H"
#include "surfaceReader.H"
#include "surfaceWriter.H"
#include "noiseFFT.H"
#include "graph.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace noiseModels
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(surfaceNoise, 0);
addToRunTimeSelectionTable(noiseModel, surfaceNoise, dictionary);
// * * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * //
void surfaceNoise::initialise(const dictionary& dict)
{
// All reading performed on the master processor only
if (Pstream::master())
{
// Create the surface reader
const word readerType(dict.lookup("reader"));
readerPtr_.reset(surfaceReader::New(readerType, inputFileName_).ptr());
// Find the index of the pressure data
const word pName(dict.lookupOrDefault<word>("pName", "p"));
const List<word> fieldNames(readerPtr_->fieldNames(0));
pIndex_ = findIndex(fieldNames, pName);
if (pIndex_ == -1)
{
FatalErrorInFunction
<< "Unable to find pressure field name " << pName
<< " in list of available fields: " << fieldNames
<< exit(FatalError);
}
// Create the surface writer
// - Could be done later, but since this utility can process a lot of
// data we can ensure that the user-input is correct prior to doing
// the heavy lifting
const word writerType(dict.lookup("writer"));
dictionary optDict
(
dict.subOrEmptyDict("writeOptions").subOrEmptyDict(writerType)
);
writerPtr_.reset(surfaceWriter::New(writerType, optDict).ptr());
// Set the time range
const instantList allTimes = readerPtr_->times();
startTimeIndex_ = findStartTimeIndex(allTimes, startTime_);
// Determine the windowing
label nAvailableTimes = allTimes.size() - startTimeIndex_;
label nRequiredTimes = windowModelPtr_->validate(nAvailableTimes);
// Restrict times
times_.setSize(nRequiredTimes);
forAll(times_, timeI)
{
times_[timeI] = allTimes[timeI + startTimeIndex_].value();
}
deltaT_ = checkUniformTimeStep(times_);
const meshedSurface& surf = readerPtr_->geometry();
nFace_ = surf.size();
}
Pstream::scatter(pIndex_);
Pstream::scatter(times_);
Pstream::scatter(startTimeIndex_);
Pstream::scatter(deltaT_);
Pstream::scatter(nFace_);
}
void surfaceNoise::readSurfaceData
(
const labelList& procFaceOffset,
List<scalarField>& pData
)
{
// Data is stored as pressure on surface at a given time. Now we need to
// pivot the data so that we have the complete pressure time history per
// surface face. In serial mode, this results in all pressure data being
// loaded into memory (!)
Info << "Reading pressure data" << endl;
if (Pstream::parRun())
{
PstreamBuffers pBufs(Pstream::nonBlocking);
// Procedure:
// 1. Master processor reads pressure data for all faces for all times
// 2. Master sends each processor a subset of faces
// 3. Local processor reconstructs the full time history for the subset
// of faces
// Note: reading all data on master to avoid potential NFS problems...
const label myProcI = Pstream::myProcNo();
const label nLocalFace =
procFaceOffset[myProcI + 1] - procFaceOffset[myProcI];
// Complete pressure time history data for subset of faces
pData.setSize(nLocalFace);
const label nTimes = times_.size();
forAll(pData, faceI)
{
pData[faceI].setSize(nTimes);
}
// Read and send data
forAll(times_, i)
{
pBufs.clear();
if (Pstream::master())
{
label timeI = i + startTimeIndex_;
Info<< " time: " << times_[i] << endl;
// Read pressure at all faces for time timeI
scalarField p(readerPtr_->field(timeI, pIndex_, scalar(0)));
// Send subset of faces to each processor
for (label procI = 0; procI < Pstream::nProcs(); procI++)
{
label face0 = procFaceOffset[procI];
label nLocalFace =
procFaceOffset[procI + 1] - procFaceOffset[procI];
UOPstream toProc(procI, pBufs);
toProc << SubList<scalar>(p, nLocalFace, face0);
}
}
pBufs.finishedSends();
// Receive data from the master
UIPstream fromProc(0, pBufs);
scalarList pSlice(fromProc);
forAll(pSlice, faceI)
{
pData[faceI][i] = pSlice[faceI];
}
}
}
else
{
const label nLocalFace = procFaceOffset[0];
pData.setSize(nLocalFace);
forAll(times_, timeI)
{
forAll(pData, faceI)
{
pData[faceI].setSize(times_.size());
}
}
forAll(times_, i)
{
label timeI = i + startTimeIndex_;
Info<< " time: " << times_[i] << endl;
const scalarField p(readerPtr_->field(timeI, pIndex_, scalar(0)));
forAll(p, faceI)
{
pData[faceI][i] = p[faceI];
}
}
}
Info<< "Read "
<< returnReduce(pData.size(), sumOp<label>())
<< " pressure traces with "
<< times_.size()
<< " time values" << nl << endl;
}
void surfaceNoise::writeSurfaceData
(
const word& fName,
const word& groupName,
const word& title,
const scalar freq,
const scalarField& data,
const labelList& procFaceOffset
) const
{
Info<< " processing " << title << " for frequency " << freq << endl;
fileName outDir
(
fileName("postProcessing")/"noise"/groupName/Foam::name(freq)
);
if (Pstream::parRun())
{
// Collect the surface data so that we can output the surfaces
PstreamBuffers pBufs(Pstream::nonBlocking);
if (!Pstream::master())
{
UOPstream toProc(0, pBufs);
toProc << data;
}
pBufs.finishedSends();
if (Pstream::master())
{
const meshedSurface& surf = readerPtr_->geometry();
scalarField allData(surf.size());
forAll(data, faceI)
{
// Master procFaceOffset is zero...
allData[faceI] = data[faceI];
}
for (label procI = 1; procI < Pstream::nProcs(); procI++)
{
UIPstream fromProc(procI, pBufs);
scalarList dataSlice(fromProc);
forAll(dataSlice, i)
{
label faceI = procFaceOffset[procI] + i;
allData[faceI] = dataSlice[i];
}
}
fileName outFileName = writerPtr_->write
(
outDir,
fName,
surf.points(),
surf.faces(),
title,
allData,
false
);
}
}
else
{
const meshedSurface& surf = readerPtr_->geometry();
writerPtr_->write
(
outDir,
fName,
surf.points(),
surf.faces(),
title,
data,
false
);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
surfaceNoise::surfaceNoise(const dictionary& dict)
:
noiseModel(dict),
inputFileName_(dict.lookup("inputFile")),
pIndex_(0),
times_(),
deltaT_(0),
startTimeIndex_(0),
nFace_(0),
fftWriteInterval_(dict.lookupOrDefault("fftWriteInterval", 1))
{
initialise(dict);
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
surfaceNoise::~surfaceNoise()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
void surfaceNoise::calculate()
{
// Container for pressure time history data per face
List<scalarField> pData;
// Processor procFaceOffsets
labelList procFaceOffset;
if (Pstream::parRun())
{
const label nProcs = Pstream::nProcs();
const label nFacePerProc = floor(nFace_/nProcs) + 1;
procFaceOffset.setSize(nProcs + 1, 0);
for (label i = 1; i < procFaceOffset.size(); i++)
{
procFaceOffset[i] = min(i*nFacePerProc, nFace_);
}
}
else
{
procFaceOffset.setSize(1, nFace_);
}
// Read pressure data from file
readSurfaceData(procFaceOffset, pData);
// Process the pressure data, and store results as surface values per
// frequency so that it can be output using the surface writer
Info<< "Creating noise FFTs" << endl;
// Storage for FFT data
const label nLocalFace = pData.size();
const scalarField freq1(noiseFFT::frequencies(nSamples_, deltaT_));
const label nFFT = freq1.size()/fftWriteInterval_;
List<scalarField> surfPf(nFFT);
List<scalarField> surfLf(nFFT);
List<scalarField> surfPSD(nFFT);
forAll(surfPf, freqI)
{
surfPf[freqI].setSize(nLocalFace);
surfLf[freqI].setSize(nLocalFace);
surfPSD[freqI].setSize(nLocalFace);
}
// Storage for 1/3 octave data
labelList octave13BandIDs;
noiseFFT::octaveFrequenciesIDs(freq1, fLower_, fUpper_, 3, octave13BandIDs);
List<scalarField> surfPdelta(octave13BandIDs.size() - 1);
List<scalarField> surfLdelta(octave13BandIDs.size() - 1);
forAll(surfPdelta, freqI)
{
surfPdelta[freqI].setSize(nLocalFace);
surfLdelta[freqI].setSize(nLocalFace);
}
forAll(pData, faceI)
{
const scalarField& p = pData[faceI];
noiseFFT nfft(deltaT_, p);
nfft -= pRef_;
graph Pf(nfft.RMSmeanPf(windowModelPtr_()));
graph Lf(nfft.Lf(Pf));
graph PSDf(nfft.PSDf(windowModelPtr_()));
graph PSD(nfft.PSD(PSDf));
// Store the frequency results in slot for face of surface
forAll(surfPf, i)
{
label freqI = (i + 1)*fftWriteInterval_ - 1;
surfPf[i][faceI] = Pf.y()[freqI];
surfLf[i][faceI] = Lf.y()[freqI];
surfPSD[i][faceI] = PSD.y()[freqI];
}
graph Pdelta(nfft.Pdelta(Pf, octave13BandIDs));
graph Ldelta(nfft.Ldelta(Lf, octave13BandIDs));
// Store the 1/3 octave results in slot for face of surface
forAll(surfPdelta, freqI)
{
surfPdelta[freqI][faceI] = Pdelta.y()[freqI];
surfLdelta[freqI][faceI] = Ldelta.y()[freqI];
}
// Free the storage for p
// p.clear();
}
Info<< "Writing fft surface data" << endl;
forAll(surfPf, i)
{
label freqI = i*fftWriteInterval_;
const word& fName = inputFileName_.name(true);
const word gName = "fft";
writeSurfaceData
(
fName,
gName,
"Pf",
freq1[freqI],
surfPf[i],
procFaceOffset
);
writeSurfaceData
(
fName,
gName,
"Lf",
freq1[freqI],
surfLf[i],
procFaceOffset
);
writeSurfaceData
(
fName,
gName,
"PSD",
freq1[freqI],
surfPSD[i],
procFaceOffset
);
}
Info<< "Writing one-third octave surface data" << endl;
forAll(surfPdelta, i)
{
const word& fName = inputFileName_.name(true);
const word gName = "oneThirdOctave";
writeSurfaceData
(
fName,
gName,
"Pdelta",
octave13BandIDs[i],
surfPdelta[i],
procFaceOffset
);
writeSurfaceData
(
fName,
gName,
"Ldelta",
octave13BandIDs[i],
surfLdelta[i],
procFaceOffset
);
}
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace noiseModels
} // End namespace Foam
// ************************************************************************* //

201
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::noiseModels::surfaceNoise
Description
Perform noise analysis on surface-based pressure data.
Input data is read from a dictionary, e.g.
\verbatim
// Pressure reference
pRef 0;
// Number of samples in sampling window
// Must be a power of 2, default = 2^16 (=65536)
N 4096;
// Lower frequency bounds
fl 25;
// Upper frequency bounds
fu 25;
// Start time
startTime 0;
windowModel <modelType>
<modelType>Coeffs
{
...
}
// Input file
inputFile "postProcessing/faceSource1/surface/patch/patch.case";
// Write interval for FFT data, default = 1
fftWriteInterval 100;
// Surface reader
reader ensight;
// Surface writer
writer ensight;
// Collate times for ensight output - ensures geometry is only written once
writeOptions
{
ensight
{
collateTimes 1;
}
}
\endverbatim
SourceFiles
surfaceNoise.C
SeeAlso
noiseModel.H
\*---------------------------------------------------------------------------*/
#ifndef surfaceNoise_H
#define surfaceNoise_H
#include "noiseModel.H"
#include "labelList.H"
#include "scalarField.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// Forward declaration of classes
class surfaceReader;
class surfaceWriter;
namespace noiseModels
{
/*---------------------------------------------------------------------------*\
Class surfaceNoise Declaration
\*---------------------------------------------------------------------------*/
class surfaceNoise
:
public noiseModel
{
protected:
// Protected Data
//- Input file name
const fileName inputFileName_;
//- Index of pressure field in reader field list
label pIndex_;
//- Sample times
scalarList times_;
//- Time step (constant)
scalar deltaT_;
//- Start time index
label startTimeIndex_;
//- Number of surface faces
label nFace_;
//- Frequency data output interval, default = 1
// nSamples/2 data points are returned from the FFT, which can
// result in a very large number of output files (1 per frequency)
label fftWriteInterval_;
//- Pointer to the surface reader
mutable autoPtr<surfaceReader> readerPtr_;
//- Pointer to the surface writer
autoPtr<surfaceWriter> writerPtr_;
// Protected Member Functions
//- Initialise
void initialise(const dictionary& dict);
//- Read surface data
void readSurfaceData
(
const labelList& procFaceOffset,
List<scalarField>& pData
);
//- Write surface data to file
void writeSurfaceData
(
const word& fName,
const word& groupName,
const word& title,
const scalar freq,
const scalarField& data,
const labelList& procFaceOffset
) const;
public:
//- Runtime type information
TypeName("surfaceNoise");
//- Constructor
surfaceNoise(const dictionary& dict);
//- Destructor
virtual ~surfaceNoise();
// Public Member Functions
//- Calculate
virtual void calculate();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace noiseModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "Hanning.H"
#include "addToRunTimeSelectionTable.H"
#include "mathematicalConstants.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace windowModels
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(Hanning, 0);
addToRunTimeSelectionTable(windowModel, Hanning, dictionary);
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Hanning::Hanning(const dictionary& dict, const label nSamples)
:
windowModel(dict, nSamples),
symmetric_(readBool(dict.lookup("symmetric"))),
extended_(readBool(dict.lookup("extended"))),
alpha_(dict.lookupOrDefault("alpha", 0.5))
{
// Extend range if required
label offset = extended_ ? 1 : 0;
scalar m = nSamples - 1 + 2*offset;
scalarField t(nSamples);
forAll(t, i)
{
t[i] = i + offset;
}
scalarField& wf = *this;
wf = (1 - alpha_)*cos(constant::mathematical::twoPi*t/m);
// Reset second half of window if symmetric
if (symmetric_)
{
label midPointI = 0;
if (nSamples % 2 == 0)
{
midPointI = nSamples/2;
}
else
{
midPointI = (nSamples + 1)/2;
}
for (label i = 0; i < midPointI; i++)
{
wf[nSamples - i - 1] = wf[i];
}
}
scalar sumSqr = sum(sqr(wf));
// Normalisation (if required)
wf *= sqrt(nSamples/sumSqr);
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Hanning::~Hanning()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
bool Hanning::symmetric() const
{
return symmetric_;
}
bool Hanning::extended() const
{
return extended_;
}
Foam::scalar Hanning::alpha() const
{
return alpha_;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace windowModels
} // End namespace Foam
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::windowModels::Hanning
Description
Hanning window
The window is described by the function
\f[
wf = (1 - \alpha) cos(2 \pi t/m);
\f]
Where:
\vartable
\alpha | Coefficient with a default value of 0.5
t | time
m | window width
\endvartable
The window can be further manipulated by the controls:
- \c symmetric: force the window to be symmetric
- \c extended: extend the window by 1 element at start and end to produce
non-zero values at the start and end positions. Note: window is
normalised to preserve energy content
SourceFiles
Hanning.C
\*---------------------------------------------------------------------------*/
#ifndef Hanning_H
#define Hanning_H
#include "autoPtr.H"
#include "runTimeSelectionTables.H"
#include "windowModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace windowModels
{
/*---------------------------------------------------------------------------*\
Class Hanning Declaration
\*---------------------------------------------------------------------------*/
class Hanning
:
public windowModel
{
protected:
// Protected Member Data
//- Symmetric switch
bool symmetric_;
//- Extended switch
bool extended_;
//- Window coefficient, default = 0.5
scalar alpha_;
public:
//- Runtime type information
TypeName("Hanning");
//- Construct from dictionary
Hanning(const dictionary& dict, const label nSamples);
//- Destuctor
virtual ~Hanning();
// Public Member Functions
//- Return the symmetric flag
bool symmetric() const;
//- Return the extended flag
bool extended() const;
//- Return the window coefficient
scalar alpha() const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace windowModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

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#include "windowModel.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(windowModel, 0);
defineRunTimeSelectionTable(windowModel, dictionary);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::windowModel::windowModel(const dictionary& dict, const label nSamples)
:
scalarField(nSamples),
nOverlapSamples_(0),
nWindow_(dict.lookupOrDefault("nWindow", -1))
{
scalar prc = readScalar(dict.lookup("overlapPercent"));
nOverlapSamples_ = floor(prc/scalar(100)*nSamples);
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::windowModel::~windowModel()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::label Foam::windowModel::nSamples() const
{
return size();
}
Foam::label Foam::windowModel::nWindow() const
{
return nWindow_;
}
Foam::label Foam::windowModel::nWindowsTotal(label nSamplesTotal) const
{
const label nSamples = this->nSamples();
return floor((nSamplesTotal - nSamples)/(nSamples - nOverlapSamples_)) + 1;
}
Foam::label Foam::windowModel::validate(const label nSamplesTotal)
{
label nSamples = this->nSamples();
if (nSamplesTotal < nSamples)
{
FatalErrorInFunction
<< "Block size N = " << nSamples
<< " is larger than total number of data points = " << nSamplesTotal
<< exit(FatalError);
}
label nWindowAvailable = nWindowsTotal(nSamplesTotal);
if (nWindow_ == -1)
{
nWindow_ = nWindowAvailable;
}
if (nWindow_ > nWindowAvailable)
{
FatalErrorInFunction
<< "Number of data points calculated with " << nWindow_
<< " windows greater than the total number of data points"
<< nl
<< " Block size, N = " << nSamples << nl
<< " Total number of data points = " << nSamplesTotal << nl
<< " Maximum number of windows = " << nWindowAvailable << nl
<< " Requested number of windows = " << nWindow_
<< exit(FatalError);
}
label nRequiredSamples =
nWindow_*nSamples - (nWindow_ - 1)*nOverlapSamples_;
Info<< "Windowing:" << nl
<< " Total samples : " << nSamplesTotal << nl
<< " Samples per window : " << nSamples << nl
<< " Number of windows : " << nWindow_ << nl
<< " Overlap size : " << nOverlapSamples_ << nl
<< " Required number of samples : " << nRequiredSamples
<< endl;
return nRequiredSamples;
}
// ************************************************************************* //

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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
\\/ M anipulation | Copyright (C) 2016 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::windowModel
Description
Base class for windowing models
SourceFiles
noiseFFT.C
\*---------------------------------------------------------------------------*/
#ifndef windowModel_H
#define windowModel_H
#include "autoPtr.H"
#include "runTimeSelectionTables.H"
#include "scalarField.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class windowModel Declaration
\*---------------------------------------------------------------------------*/
class windowModel
:
public scalarField
{
protected:
// Protected Data
//- Number of overlap samples per window
label nOverlapSamples_;
//- Number of windows
label nWindow_;
public:
//- Runtime type information
TypeName("windowModel");
// Declare runtime constructor selection table
declareRunTimeSelectionTable
(
autoPtr,
windowModel,
dictionary,
(
const dictionary& dict,
const label nSamples
),
(dict, nSamples)
);
//- Construct from dictionary
windowModel(const dictionary& dict, const label nSamples);
// Selectors
//- Return a reference to the selected window model
static autoPtr<windowModel> New
(
const dictionary& dict,
const label nSamples
);
//- Destuctor
virtual ~windowModel();
// Public Member Functions
//- Return the number of samples in the window
label nSamples() const;
//- Return the number of windows
label nWindow() const;
//- Return the total number of windows for a given number of samples
label nWindowsTotal(label nSamplesTotal) const;
//- Validate that the window is applicable to the data set size, and
// return the number of required data points
label validate(label n);
//- Return the windowed data
template<class Type>
tmp<Field<Type> > apply
(
const Field<Type>& fld,
const label windowI
) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "windowModelTemplates.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

63
src/randomProcesses/windowModels/windowModel/windowModelNew.C Normal file
View File

@ -0,0 +1,63 @@
#/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "windowModel.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::autoPtr<Foam::windowModel> Foam::windowModel::New
(
const dictionary& dict,
const label nSamples
)
{
const word modelType(dict.lookup("windowModel"));
Info<< "Selecting windowModel " << modelType << endl;
dictionaryConstructorTable::iterator cstrIter =
dictionaryConstructorTablePtr_->find(modelType);
if (cstrIter == dictionaryConstructorTablePtr_->end())
{
FatalErrorIn
(
"windowModel::New(const dictionary&, const label)"
) << "Unknown windowModel type "
<< modelType << nl << nl
<< "Valid windowModel types are:" << nl
<< dictionaryConstructorTablePtr_->sortedToc()
<< exit(FatalError);
}
return autoPtr<windowModel>
(
cstrIter()(dict.subDict(modelType + "Coeffs"), nSamples)
);
}
// ************************************************************************* //

84
src/randomProcesses/windowModels/windowModel/windowModelTemplates.C Normal file
View File

@ -0,0 +1,84 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
template<class Type>
Foam::tmp<Foam::Field<Type> > Foam::windowModel::apply
(
const Field<Type>& fld,
const label windowI
) const
{
label nSamples = this->nSamples();
if (nSamples > fld.size())
{
FatalErrorIn
(
"template<class Type> "
"Foam::tmp<Foam::Field<Type> > Foam::windowModel::apply"
"("
"const Field<Type>&, "
"const label"
") const"
)
<< "Number of samples in sampling window is greater than the "
<< "size of the input field" << nl
<< " input field size = " << fld.size() << nl
<< " window size = " << nSamples << nl
<< " requested window index = " << windowI
<< exit(FatalError);
}
tmp<Field<Type> > tresult(new Field<Type>(nSamples, pTraits<Type>::zero));
Field<Type>& result = tresult();
label nWindow = nWindowsTotal(fld.size());
if (windowI >= nWindow)
{
FatalErrorIn
(
"template<class Type> "
"Foam::tmp<Foam::Field<Type> > Foam::windowModel::apply"
"("
"const Field<Type>&, "
"const label"
") const"
)
<< "Requested window " << windowI << " outside of range. "
<< "Number of available windows is " << nWindow
<< abort(FatalError);
}
label windowOffset = windowI*(nSamples - nOverlapSamples_);
const scalarField& wf = *this;
result = wf*SubField<Type>(fld, nSamples, windowOffset);
return tresult;
}
// ************************************************************************* //

6
src/sampling/Make/files
View File

@ -51,6 +51,12 @@ $(surfWriters)/starcd/starcdSurfaceWriter.C
$(surfWriters)/vtk/vtkSurfaceWriter.C
$(surfWriters)/boundaryData/boundaryDataSurfaceWriter.C
surfReaders = sampledSurface/readers
$(surfReaders)/surfaceReader.C
$(surfReaders)/surfaceReaderNew.C
$(surfReaders)/ensight/ensightSurfaceReader.C
graphField/writePatchGraph.C
graphField/writeCellGraph.C
graphField/makeGraph.C

416
src/sampling/sampledSurface/readers/ensight/ensightSurfaceReader.C Normal file
View File

@ -0,0 +1,416 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "ensightSurfaceReader.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(ensightSurfaceReader, 0);
addToRunTimeSelectionTable(surfaceReader, ensightSurfaceReader, fileName);
}
void Foam::ensightSurfaceReader::skip(const label n, IFstream& is) const
{
label i = 0;
token t;
while (is.good() && (i < n))
{
is >> t;
i++;
if (debug)
{
Info<< "Skipping token " << t << endl;
}
}
if (i != n)
{
WarningInFunction
<< "Requested to skip " << n << "tokens, but stream exited after "
<< i << " tokens. Last token read: " << t
<< endl;
}
}
void Foam::ensightSurfaceReader::debugSection
(
const word& expected,
IFstream& is
) const
{
word actual(is);
if (expected != actual)
{
FatalIOErrorInFunction(is)
<< "Expected section header '" << expected
<< "' but read the word '" << actual << "'"
<< exit(FatalIOError);
}
}
void Foam::ensightSurfaceReader::readCase(IFstream& is)
{
if (debug)
{
InfoInFunction<< endl;
}
if (!is.good())
{
FatalErrorInFunction
<< "Cannot read file " << is.name()
<< exit(FatalError);
}
// Read the file
debugSection("FORMAT", is);
skip(3, is); // type: ensight gold
debugSection("GEOMETRY", is);
readSkip(is, 2, meshFileName_);
debugSection("VARIABLE", is);
DynamicList<word> fieldNames(10);
DynamicList<word> fieldFileNames(10);
word fieldName;
word fieldFileName;
while (is.good())
{
word primitiveType(is); // scalar, vector
if (primitiveType == "TIME")
{
break;
}
readSkip(is, 3, fieldName); // p, U etc
fieldNames.append(fieldName);
is >> fieldFileName; // surfaceName.****.fieldName
fieldFileNames.append(fieldFileName);
}
fieldNames_.transfer(fieldNames);
fieldFileNames_.transfer(fieldFileNames);
if (debug)
{
Info<< "fieldNames: " << fieldNames << nl
<< "fieldFileNames: " << fieldFileNames << endl;
}
// Start reading time information
skip(3, is); // time set: 1
readSkip(is, 3, nTimeSteps_);
readSkip(is, 3, timeStartIndex_);
readSkip(is, 2, timeIncrement_);
if (debug)
{
Info<< "nTimeSteps: " << nTimeSteps_ << nl
<< "timeStartIndex: " << timeStartIndex_ << nl
<< "timeIncrement: " << timeIncrement_ << endl;
}
// Read the time values
skip(2, is); // time values:
timeValues_.setSize(nTimeSteps_);
for (label i = 0; i < nTimeSteps_; i++)
{
scalar t(readScalar(is));
timeValues_[i].value() = t;
// TODO: use character representation of t directly instead of
// regenerating from scalar value
timeValues_[i].name() = Foam::name(t);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::ensightSurfaceReader::ensightSurfaceReader(const fileName& fName)
:
surfaceReader(fName),
baseDir_(fName.path()),
meshFileName_(),
fieldNames_(),
fieldFileNames_(),
nTimeSteps_(0),
timeStartIndex_(0),
timeIncrement_(1),
timeValues_(),
surfPtr_(NULL)
{
IFstream is(fName);
readCase(is);
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::ensightSurfaceReader::~ensightSurfaceReader()
{}
// * * * * * * * * * * * * * Public Member Functions * * * * * * * * * * * //
const Foam::meshedSurface& Foam::ensightSurfaceReader::geometry()
{
if (debug)
{
InfoInFunction<< endl;
}
if (!surfPtr_.valid())
{
IFstream is(baseDir_/meshFileName_);
if (!is.good())
{
FatalErrorInFunction
<< "Cannot read file " << is.name()
<< exit(FatalError);
}
token t;
while (is.good())
{
is >> t;
if (t.isWord())
{
word wordToken = t.wordToken();
if (wordToken == "coordinates")
{
break;
}
}
}
label nPoints(readLabel(is));
if (debug)
{
Info<< "nPoints: " << nPoints << endl;
}
pointField points(nPoints);
{
scalarField x(nPoints);
for (label dir = 0; dir < 3; dir++)
{
forAll(points, pointI)
{
x[pointI] = readScalar(is);
}
points.replace(dir, x);
}
}
// Read faces - may be a mix of tris, quads and polys
DynamicList<face> faces(ceil(nPoints/3));
while (is.good())
{
token t(is);
if (is.eof())
{
break;
}
word faceType(t.wordToken());
if (debug)
{
Info<< "faceType: " << faceType << endl;
}
label nFace(readLabel(is));
if (debug)
{
Info<< "nFace: " << nFace << endl;
}
if (faceType == "tria3")
{
label np = 3;
for (label faceI = 0; faceI < nFace; faceI++)
{
face f(np);
for (label fpI = 0; fpI < np; fpI++)
{
f[fpI] = readLabel(is);
}
faces.append(f);
}
}
else if (faceType == "quad4")
{
label np = 4;
for (label faceI = 0; faceI < nFace; faceI++)
{
face f(np);
for (label fpI = 0; fpI < np; fpI++)
{
f[fpI] = readLabel(is);
}
faces.append(f);
}
}
else if (faceType == "nsided")
{
labelList np(nFace);
for (label faceI = 0; faceI < nFace; faceI++)
{
np[faceI] = readLabel(is);
}
for (label faceI = 0; faceI < nFace; faceI++)
{
face f(np[faceI]);
for (label fpI = 0; fpI < f.size(); fpI++)
{
f[fpI] = readLabel(is);
}
faces.append(f);
}
}
else if (faceType != "")
{
WarningInFunction
<< "Unknown face type: " << faceType
<< ". Aborting read and continuing with current elements "
<< "only" << endl;
}
}
if (debug)
{
Info<< "read nFaces: " << faces.size() << endl;
}
forAll(faces, faceI)
{
face& f = faces[faceI];
forAll(f, fpI)
{
f[fpI]--;
}
}
surfPtr_.reset(new meshedSurface(xferMove(points), faces.xfer()));
}
return surfPtr_();
}
Foam::instantList Foam::ensightSurfaceReader::times() const
{
return timeValues_;
}
Foam::wordList Foam::ensightSurfaceReader::fieldNames
(
const label timeIndex
) const
{
return fieldNames_;
}
Foam::tmp<Foam::Field<Foam::scalar> > Foam::ensightSurfaceReader::field
(
const label timeIndex,
const label fieldIndex,
const scalar& refValue
) const
{
return readField<scalar>(timeIndex, fieldIndex);
}
Foam::tmp<Foam::Field<Foam::vector> > Foam::ensightSurfaceReader::field
(
const label timeIndex,
const label fieldIndex,
const vector& refValue
) const
{
return readField<vector>(timeIndex, fieldIndex);
}
Foam::tmp<Foam::Field<Foam::sphericalTensor> >
Foam::ensightSurfaceReader::field
(
const label timeIndex,
const label fieldIndex,
const sphericalTensor& refValue
) const
{
return readField<sphericalTensor>(timeIndex, fieldIndex);
}
Foam::tmp<Foam::Field<Foam::symmTensor> > Foam::ensightSurfaceReader::field
(
const label timeIndex,
const label fieldIndex,
const symmTensor& refValue
) const
{
return readField<symmTensor>(timeIndex, fieldIndex);
}
Foam::tmp<Foam::Field<Foam::tensor> > Foam::ensightSurfaceReader::field
(
const label timeIndex,
const label fieldIndex,
const tensor& refValue
) const
{
return readField<tensor>(timeIndex, fieldIndex);
}
// ************************************************************************* //

191
src/sampling/sampledSurface/readers/ensight/ensightSurfaceReader.H Normal file
View File

@ -0,0 +1,191 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::ensightensightSurfaceReader
Description
Ensight format surface reader
SourceFiles
ensightSurfaceReader.C
\*---------------------------------------------------------------------------*/
#ifndef ensightSurfaceReader_H
#define ensightSurfaceReader_H
#include "surfaceReader.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class ensightSurfaceReader Declaration
\*---------------------------------------------------------------------------*/
class ensightSurfaceReader
:
public surfaceReader
{
protected:
// Protected Data
//- Base directory
fileName baseDir_;
//- Name of mesh file
word meshFileName_;
//- Field names
List<word> fieldNames_;
//- Field file names
List<word> fieldFileNames_;
//- Number of time steps
label nTimeSteps_;
//- Start time index
label timeStartIndex_;
//- Time increment
label timeIncrement_;
//- Times
instantList timeValues_;
//- Pointer to the surface
autoPtr<meshedSurface> surfPtr_;
// Protected Member Functions
//- Read and check a section header
void debugSection(const word& expected, IFstream& is) const;
//- Read the case file
void readCase(IFstream& is);
//- Helper function to skip forward n steps in stream
void skip(const label n, IFstream& is) const;
//- Helper function to return Type after skipping n tokens
template<class Type>
void readSkip(IFstream& is, const label nSkip, Type& value) const;
//- Helper function to return a field
template<class Type>
tmp<Field<Type> > readField
(
const label timeIndex,
const label fieldIndex
) const;
public:
//- Runtime type information
TypeName("ensight");
// Constructors
//- Construct from fileName
ensightSurfaceReader(const fileName& fName);
//- Destructor
virtual ~ensightSurfaceReader();
// Member Functions
//- Return a reference to the surface geometry
virtual const meshedSurface& geometry();
//- Return a list of the available times
virtual instantList times() const;
//- Return a list of the available fields at a given time
virtual wordList fieldNames(const label timeIndex) const;
//- Return a scalar field at a given time
virtual tmp<Field<scalar> > field
(
const label timeIndex,
const label fieldIndex,
const scalar& refValue = pTraits<scalar>::zero
) const;
//- Return a scalar field at a given time
virtual tmp<Field<vector> > field
(
const label timeIndex,
const label fieldIndex,
const vector& refValue = pTraits<vector>::zero
) const;
//- Return a sphericalTensor field at a given time
virtual tmp<Field<sphericalTensor> > field
(
const label timeIndex,
const label fieldIndex,
const sphericalTensor& reValue = pTraits<sphericalTensor>::zero
) const;
//- Return a symmTensor field at a given time
virtual tmp<Field<symmTensor> > field
(
const label timeIndex,
const label fieldIndex,
const symmTensor& reValue = pTraits<symmTensor>::zero
) const;
//- Return a tensor field at a given time
virtual tmp<Field<tensor> > field
(
const label timeIndex,
const label fieldIndex,
const tensor& reValue = pTraits<tensor>::zero
) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "ensightSurfaceReaderTemplates.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

144
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@ -0,0 +1,144 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include <iomanip>
#include <sstream>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
template<class Type>
void Foam::ensightSurfaceReader::readSkip
(
IFstream& is,
const label nSkip,
Type& value
) const
{
skip(nSkip, is);
is >> value;
}
template<class Type>
Foam::tmp<Foam::Field<Type> > Foam::ensightSurfaceReader::readField
(
const label timeIndex,
const label fieldIndex
) const
{
if (debug)
{
InfoInFunction<< endl;
}
const word& fieldName(fieldNames_[fieldIndex]);
const label fileIndex = timeStartIndex_ + timeIndex*timeIncrement_;
fileName fieldFileName(fieldFileNames_[fieldIndex]);
std::ostringstream oss;
oss << std::setfill('0') << std::setw(4) << fileIndex;
const word indexStr = oss.str();
fieldFileName.replace("****", indexStr);
IFstream is(baseDir_/fieldFileName);
if (!is.good())
{
FatalErrorInFunction
<< "Cannot read file " << is.name()
<< " for field " << fieldName
<< exit(FatalError);
}
// Check that data type is as expected
word primitiveType(is);
if (debug)
{
Info<< "primitiveType: " << primitiveType << endl;
}
if (primitiveType != pTraits<Type>::typeName)
{
FatalIOErrorInFunction(is)
<< "Expected " << pTraits<Type>::typeName << "values "
<< "but found type " << primitiveType
<< exit(FatalIOError);
}
tmp<Field<Type> > tField(new Field<Type>());
label n;
if (surfPtr_.valid())
{
n = surfPtr_->size();
}
else
{
n = 1000;
}
Type value;
word wValue;
label iValue;
// Read header info: part index, e.g. part 1
is >> wValue >> iValue;
// Read data file
// - Assume that file contains a mix of words and numbers, and that all
// numbers relate to face values, e.g. header comprises of words and
// element types are also words, e.g. tria3, quad4, nsided
DynamicList<Type> values(n);
while (is.good())
{
token t(is);
if (is.eof())
{
break;
}
if (t.isWord())
{
wValue = t.wordToken();
}
else
{
is.putBack(t);
is >> value;
values.append(value);
}
}
tField().transfer(values);
return tField;
}
// ************************************************************************* //

51
src/sampling/sampledSurface/readers/surfaceReader.C Normal file
View File

@ -0,0 +1,51 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "surfaceReader.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(surfaceReader, 0);
defineRunTimeSelectionTable(surfaceReader, fileName);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::surfaceReader::surfaceReader(const fileName& fName)
:
fileName_(fName)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::surfaceReader::~surfaceReader()
{}
// ************************************************************************* //

161
src/sampling/sampledSurface/readers/surfaceReader.H Normal file
View File

@ -0,0 +1,161 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::surfaceReader
Description
Base class for surface readers
SourceFiles
surfaceReader.C
\*---------------------------------------------------------------------------*/
#ifndef surfaceReader_H
#define surfaceReader_H
#include "typeInfo.H"
#include "autoPtr.H"
#include "MeshedSurfaces.H"
#include "runTimeSelectionTables.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class surfaceReader Declaration
\*---------------------------------------------------------------------------*/
class surfaceReader
{
protected:
//- File name
fileName fileName_;
public:
//- Runtime type information
TypeName("surfaceReader");
// Declare run-time constructor selection table
declareRunTimeSelectionTable
(
autoPtr,
surfaceReader,
fileName,
(
const fileName& fName
),
(fName)
);
// Selectors
//- Return a reference to the selected surfaceReader
static autoPtr<surfaceReader> New
(
const word& readType,
const fileName& fName
);
// Constructors
//- Construct from fileName
surfaceReader(const fileName& fName);
//- Destructor
virtual ~surfaceReader();
// Member Functions
//- Return a reference to the surface geometry
virtual const meshedSurface& geometry() = 0;
//- Return a list of the available times
virtual instantList times() const = 0;
//- Return a list of the available fields at a given time
virtual wordList fieldNames(const label timeIndex) const = 0;
//- Return a scalar field at a given time
virtual tmp<Field<scalar> > field
(
const label timeIndex,
const label fieldIndex,
const scalar& refValue = pTraits<scalar>::zero
) const = 0;
//- Return a vector field at a given time
virtual tmp<Field<vector> > field
(
const label timeIndex,
const label fieldIndex,
const vector& refValue = pTraits<vector>::zero
) const = 0;
//- Return a sphericalTensor field at a given time
virtual tmp<Field<sphericalTensor> > field
(
const label timeIndex,
const label fieldIndex,
const sphericalTensor& reValue = pTraits<sphericalTensor>::zero
) const = 0;
//- Return a symmTensor field at a given time
virtual tmp<Field<symmTensor> > field
(
const label timeIndex,
const label fieldIndex,
const symmTensor& reValue = pTraits<symmTensor>::zero
) const = 0;
//- Return a tensor field at a given time
virtual tmp<Field<tensor> > field
(
const label timeIndex,
const label fieldIndex,
const tensor& reValue = pTraits<tensor>::zero
) const = 0;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

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src/sampling/sampledSurface/readers/surfaceReaderNew.C Normal file
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@ -0,0 +1,52 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2015-2016 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "surfaceReader.H"
// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
Foam::autoPtr<Foam::surfaceReader> Foam::surfaceReader::New
(
const word& readerType,
const fileName& fName
)
{
fileNameConstructorTable::iterator cstrIter =
fileNameConstructorTablePtr_->find(readerType);
if (cstrIter == fileNameConstructorTablePtr_->end())
{
FatalErrorInFunction
<< "Unknown reader type \"" << readerType << "\"\n\n"
<< "Valid reader types: "
<< fileNameConstructorTablePtr_->sortedToc() << nl
<< exit(FatalError);
}
return autoPtr<surfaceReader>(cstrIter()(fName));
}
// ************************************************************************* //