mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
Merge branch 'feature-noise' into 'develop'
Feature noise New functionality includes: - run-time selectable noise models: point|surface - run-time selectable window models: Hanning (+ options symmetric, extended), uniform - calculates PSD (Pa^2/Hz) and dB/HZ; SPL (Pa^2) and dB - calculates 1/3 octave data, with centre frequency 1kHz surfaceNoise only: - reads ascii/binary ensight surface data (requires collateTimes option) - generates graphs for surface average quantities - operates in parallel See merge request !50
This commit is contained in:
Andrew Heather
14
applications/utilities/postProcessing/noise/Allwmake
Executable file
14
applications/utilities/postProcessing/noise/Allwmake
Executable file
@ -0,0 +1,14 @@
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#!/bin/sh
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cd ${0%/*} || exit 1 # run from this directory
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if [ -f "$FFTW_ARCH_PATH/include/fftw3.h" ] || \
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[ "${FFTW_ARCH_PATH##*-}" = system -a -f "/usr/include/fftw3.h" ]
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then
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wmake
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else
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echo
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echo "Skipping noise utility (no FFTW)"
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echo
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fi
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#------------------------------------------------------------------------------
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@ -1,6 +1,7 @@
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EXE_INC = \
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-I$(LIB_SRC)/randomProcesses/lnInclude \
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-I$(LIB_SRC)/sampling/lnInclude
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-I$(LIB_SRC)/sampling/lnInclude \
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-I$(LIB_SRC)/surfMesh/lnInclude
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EXE_LIBS = \
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-lrandomProcesses \
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@ -2,8 +2,8 @@
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
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\\/ M anipulation |
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\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
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\\/ M anipulation | Copyright (C) 2016 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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@ -28,157 +28,103 @@ Group
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grpPostProcessingUtilities
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Description
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Utility to perform noise analysis of pressure data using the noiseFFT
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library.
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Utility to perform noise analysis of pressure data.
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Control settings are read from the $FOAM_CASE/system/noiseDict dictionary,
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or user-specified dictionary using the -dict option. Pressure data is
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read using a CSV reader:
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The utility provides a light wrapper around the run-time selectable
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noise model. Current options include:
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- point, and
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- surface noise.
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\heading Usage
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\heading Example usage
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\verbatim
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pRef 101325;
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N 65536;
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nw 100;
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f1 25;
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fU 10000;
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graphFormat raw;
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noiseModel surfaceNoise; // pointNoise
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pressureData
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surfaceNoiseCoeffs
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{
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fileName "pressureData"
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nHeaderLine 1; // number of header lines
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refColumn 0; // reference column index
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componentColumns (1); // component column indices
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separator " "; // optional (defaults to ",")
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mergeSeparators no; // merge multiple separators
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outOfBounds clamp; // optional out-of-bounds handling
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interpolationScheme linear; // optional interpolation scheme
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windowModel Hanning;
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HanningCoeffs
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{
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// Window overlap percentage
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overlapPercent 50;
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symmetric yes;
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extended yes;
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// Optional number of windows, default = all available
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nWindow 5;
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}
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// Input file
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inputFile "postProcessing/faceSource1/surface/patch/patch.case";
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// Surface reader
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reader ensight;
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// Surface writer
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writer ensight;
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// Collate times for ensight output - ensures geometry is only written once
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writeOptions
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{
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ensight
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{
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collateTimes 1;
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}
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}
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// Number of samples in sampling window
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// Must be a power of 2, default = 2^16 (=65536)
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N 4096;
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// Write interval for FFT data, default = 1
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fftWriteInterval 100;
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}
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\endverbatim
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where
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\table
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Property | Description | Required | Default value
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pRef | Reference pressure | no | 0
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N | Number of samples in sampling window | no | 65536
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nw | Number of sampling windows | no | 100
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fl | Lower frequency band | no | 25
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fU | Upper frequency band | no | 10000
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graphFormat | Output graph format | no | raw
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\endtable
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Current graph outputs include:
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- FFT of the pressure data
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- narrow-band PFL (pressure-fluctuation level) spectrum
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- one-third-octave-band PFL spectrum
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- one-third-octave-band pressure spectrum
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SeeAlso
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CSV.H
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noiseFFT.H
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noiseModel.H
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windowModel.H
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\*---------------------------------------------------------------------------*/
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#include "noiseFFT.H"
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#include "argList.H"
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#include "Time.H"
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#include "functionObjectFile.H"
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#include "CSV.H"
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#include "noiseModel.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Foam::scalar checkUniformTimeStep(const scalarField& t)
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{
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// check that a uniform time step has been applied
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scalar deltaT = -1.0;
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if (t.size() > 1)
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{
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for (label i = 1; i < t.size(); i++)
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{
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scalar dT = t[i] - t[i-1];
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if (deltaT < 0)
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{
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deltaT = dT;
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}
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if (mag(deltaT - dT) > SMALL)
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{
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FatalErrorInFunction
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<< "Unable to process data with a variable time step"
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<< exit(FatalError);
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}
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}
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}
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else
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{
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FatalErrorInFunction
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<< "Unable to create FFT with a single value"
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<< exit(FatalError);
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}
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return deltaT;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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#include "addDictOption.H"
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#include "setRootCase.H"
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#include "createTime.H"
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#include "createFields.H"
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Info<< "Reading data file" << endl;
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Function1Types::CSV<scalar> pData("pressure", dict, "Data");
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// time history data
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const scalarField t(pData.x());
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// pressure data
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const scalarField p(pData.y());
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if (t.size() < N)
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fileName dictName(runTime.system()/"noiseDict");
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if (args.optionFound("dict"))
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{
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FatalErrorInFunction
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<< "Block size N = " << N
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<< " is larger than number of data = " << t.size()
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<< exit(FatalError);
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dictName = args["dict"];
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}
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Info<< " read " << t.size() << " values" << nl << endl;
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IOdictionary dict
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(
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IOobject
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(
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dictName,
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runTime,
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IOobject::MUST_READ
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)
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);
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Info<< "Creating noise FFT" << endl;
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noiseFFT nfft(checkUniformTimeStep(t), p);
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nfft -= pRef;
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fileName baseFileName(pData.fName().lessExt());
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graph Pf(nfft.RMSmeanPf(N, min(nfft.size()/N, nw)));
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Info<< " Creating graph for " << Pf.title() << endl;
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Pf.write(baseFileName + graph::wordify(Pf.title()), graphFormat);
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graph Lf(nfft.Lf(Pf));
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Info<< " Creating graph for " << Lf.title() << endl;
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Lf.write(baseFileName + graph::wordify(Lf.title()), graphFormat);
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graph Ldelta(nfft.Ldelta(Lf, f1, fU));
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Info<< " Creating graph for " << Ldelta.title() << endl;
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Ldelta.write(baseFileName + graph::wordify(Ldelta.title()), graphFormat);
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graph Pdelta(nfft.Pdelta(Pf, f1, fU));
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Info<< " Creating graph for " << Pdelta.title() << endl;
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Pdelta.write(baseFileName + graph::wordify(Pdelta.title()), graphFormat);
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autoPtr<noiseModel> model(noiseModel::New(dict));
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model->calculate();
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Info<< nl << "End\n" << endl;
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136
applications/utilities/postProcessing/noise/noiseDict
Normal file
136
applications/utilities/postProcessing/noise/noiseDict
Normal file
@ -0,0 +1,136 @@
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/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
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| \\ / O peration | Version: plus |
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| \\ / A nd | Web: www.OpenFOAM.com |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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location "system";
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object noiseDict;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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noiseModel surfaceNoise;
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surfaceNoiseCoeffs
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{
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windowModel Hanning;
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HanningCoeffs
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{
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// Window overlap percentage
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overlapPercent 50;
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symmetric yes;
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extended yes;
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// Optional number of windows, default = all available
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// nWindow 1;
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}
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/*
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windowModel uniform;
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uniformCoeffs
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{
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// Window overlap percentage
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overlapPercent 50;
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value 1;
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// Optional number of windows, default = all available
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// nWindow 1;
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}
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*/
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// Input file
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inputFile "postProcessing/faceSource1/surface/patch_motorBike_rider-helmet%65/patch_motorBike_rider-helmet%65.case";
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// Surface reader
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reader ensight;
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// Surface writer
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writer ensight;
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// Collate times for ensight output - ensures geometry is only written once
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writeOptions
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{
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ensight
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{
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collateTimes 1;
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}
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}
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// Reference density (to convert from kinematic to static pressure)
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rhoRef 1.205;
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// Number of samples in sampling window
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// Must be a power of 2, default = 2^16 (=65536)
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N 4096; // 8192; // 4096;
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// Lower frequency limit, default = 25Hz
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//fl 25;
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// Upper frequency limit, default = 10kHz
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fu 15000;
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// Start time, default = 0s
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//startTime 0;
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// Write interval for FFT data, default = 1
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// fftWriteInterval 100;
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}
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pointNoiseCoeffs
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{
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csvFileData
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{
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fileName "pressureData";
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nHeaderLine 1;
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refColumn 0;
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componentColumns (1);
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separator " ";
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mergeSeparators yes;
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}
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HanningCoeffs
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{
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// Window overlap percentage
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overlapPercent 50;
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symmetric yes;
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extended yes;
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// Optional number of windows, default = all available
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//nWindow 5;
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}
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// Graph format, default = raw
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graphFormat raw;
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// Reference density (to convert from kinematic to static pressure)
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rhoRef 1.2;
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// Number of samples in sampling window
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// Must be a power of 2, default = 2^16 (=65536)
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N 4096;
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// Lower frequency limit, default = 25Hz
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//fl 25;
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// Upper frequency limit, default = 10kHz
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//fu 10000;
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// Start time, default = 0s
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//startTime 0;
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// Write interval for FFT data, default = 1
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fftWriteInterval 100;
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}
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// ************************************************************************* //
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14
applications/utilities/preProcessing/boxTurb/Allwmake
Executable file
14
applications/utilities/preProcessing/boxTurb/Allwmake
Executable file
@ -0,0 +1,14 @@
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#!/bin/sh
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||||
cd ${0%/*} || exit 1 # run from this directory
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|
||||
if [ -f "$FFTW_ARCH_PATH/include/fftw3.h" ] || \
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||||
[ "${FFTW_ARCH_PATH##*-}" = system -a -f "/usr/include/fftw3.h" ]
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||||
then
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||||
wmake
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||||
else
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||||
echo
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||||
echo "Skipping boxTurb utility (no FFTW)"
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||||
echo
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||||
fi
|
||||
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||||
#------------------------------------------------------------------------------
|
||||
Reference in New Issue
Block a user