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Averaging does not need to be weighted if the fields being averaged are extensive - they weight themselves automatically. Recording momentum and energy denisty, and averaging them, then once decent averaged fields exist, using the new dsmcFields utility to create the intensive fields: UMean and TMean (translational, internal and overall).
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graham
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dsmcFields.C
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EXE = $(FOAM_APPBIN)/dsmcFields
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14
applications/utilities/postProcessing/miscellaneous/dsmcFields/Make/options
Executable file
14
applications/utilities/postProcessing/miscellaneous/dsmcFields/Make/options
Executable file
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EXE_INC = \
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-I$(LIB_SRC)/postProcessing/postCalc \
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-I$(LIB_SRC)/finiteVolume/lnInclude \
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-I$(LIB_SRC)/lagrangian/basic/lnInclude \
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-I$(LIB_SRC)/lagrangian/dsmc/lnInclude \
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-I$(LIB_SRC)/meshTools/lnInclude
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EXE_LIBS = \
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$(FOAM_LIBBIN)/postCalc.o \
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-lmeshTools \
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-lfiniteVolume \
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-llagrangian \
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-ldsmc
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/*---------------------------------------------------------------------------*\
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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) 1991-2009 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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dsmcFields
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Description
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Calculate intensive fields (U and T) from averaged extensive fields from a
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DSMC calculation.
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\*---------------------------------------------------------------------------*/
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#include "calc.H"
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#include "fvc.H"
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#include "dsmcCloud.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
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{
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bool writeResults = !args.options().found("noWrite");
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IOobject rhoNMeanheader
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(
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"rhoNMean",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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IOobject rhoMMeanheader
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(
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"rhoMMean",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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IOobject momentumMeanheader
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(
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"momentumMean",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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IOobject linearKEMeanheader
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(
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"linearKEMean",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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IOobject internalEMeanheader
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(
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"internalEMean",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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IOobject iDofMeanheader
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(
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"iDofMean",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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if (!rhoNMeanheader.headerOk())
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{
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Info<< " No rhoNMean" << endl;
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}
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else if (!rhoMMeanheader.headerOk())
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{
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Info<< " No rhoMMean" << endl;
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}
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else if (!momentumMeanheader.headerOk())
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{
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Info<< " No momentumMean" << endl;
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}
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else if (!linearKEMeanheader.headerOk())
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{
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Info<< " No linearKEMean" << endl;
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}
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else if (!internalEMeanheader.headerOk())
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{
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Info<< " No internalEMean" << endl;
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}
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else if (!iDofMeanheader.headerOk())
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{
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Info<< " No iDofMean" << endl;
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}
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else
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{
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Info<< "Reading field rhoNMean" << endl;
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volScalarField rhoNMean(rhoNMeanheader, mesh);
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Info<< "Reading field rhoMMean" << endl;
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volScalarField rhoMMean(rhoMMeanheader, mesh);
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Info<< "Reading field momentumMean" << endl;
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volVectorField momentumMean(momentumMeanheader, mesh);
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Info<< "Reading field linearKEMean" << endl;
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volScalarField linearKEMean(linearKEMeanheader, mesh);
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Info<< "Reading field internalEMean" << endl;
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volScalarField internalEMean(internalEMeanheader, mesh);
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Info<< "Reading field iDofMean" << endl;
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volScalarField iDofMean(iDofMeanheader, mesh);
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// Check if there are any zero values in the density fields
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if (min(rhoNMean).value() > VSMALL)
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{
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// TODO Sort out boundary field values if required
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Info<< nl << "Calculating UMean field." << endl;
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volVectorField UMean
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(
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IOobject
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(
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"UMean",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ
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),
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momentumMean/rhoMMean
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);
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Info<< nl << "Calculating TMean fields." << endl;
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volScalarField translationalTMean
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(
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IOobject
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(
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"translationalTMean",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ
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),
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2.0/(3.0*dsmcCloud::kb*rhoNMean)
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*(linearKEMean - 0.5*rhoMMean*(UMean & UMean))
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);
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volScalarField internalTMean
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(
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IOobject
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(
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"internalTMean",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ
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),
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2.0/(dsmcCloud::kb*iDofMean)*internalEMean
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);
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volScalarField overallTMean
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(
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IOobject
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(
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"overallTMean",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ
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),
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2.0/(dsmcCloud::kb*(3.0*rhoNMean + iDofMean))
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*(linearKEMean - 0.5*rhoMMean*(UMean & UMean) + internalEMean)
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);
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Info<< nl << "magUMean max/min : "
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<< max(mag(UMean)).value() << " "
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<< min(mag(UMean)).value() << endl;
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Info<< nl << "translationalTMean max/min : "
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<< max(translationalTMean).value() << " "
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<< min(translationalTMean).value() << endl;
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Info<< nl << "internalTMean max/min : "
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<< max(internalTMean).value() << " "
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<< min(internalTMean).value() << endl;
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Info<< nl << "overallTMean max/min : "
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<< max(overallTMean).value() << " "
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<< min(overallTMean).value() << endl;
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if (writeResults)
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{
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UMean.write();
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translationalTMean.write();
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internalTMean.write();
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overallTMean.write();
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}
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}
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else
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{
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Info<< "Small or negative value (" << min(rhoNMean)
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<< ") found in rhoNMean field. "
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<< "Not calculating fields to avoid division by zero "
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<< "or invalid results."
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<< endl;
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}
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}
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}
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// ************************************************************************* //
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