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‎20181116OpenFOAMカスタマイズ入門v2.md‎

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‎lecture_note.md‎

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‎solvers/mySimpleFoam/Make/files‎

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mySimpleFoam.C
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EXE = $(FOAM_USER_APPBIN)/mySimpleFoam

‎solvers/mySimpleFoam/Make/options‎

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EXE_INC = \
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-I$(LIB_SRC)/finiteVolume/lnInclude \
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-I$(LIB_SRC)/meshTools/lnInclude \
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-I$(LIB_SRC)/sampling/lnInclude \
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-I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
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-I$(LIB_SRC)/TurbulenceModels/incompressible/lnInclude \
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-I$(LIB_SRC)/transportModels \
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-I$(LIB_SRC)/transportModels/incompressible/singlePhaseTransportModel
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EXE_LIBS = \
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-lfiniteVolume \
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-lfvOptions \
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-lmeshTools \
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-lsampling \
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-lturbulenceModels \
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-lincompressibleTurbulenceModels \
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-lincompressibleTransportModels \
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-latmosphericModels

‎solvers/mySimpleFoam/UEqn.H‎

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// Momentum predictor
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MRF.correctBoundaryVelocity(U);
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tmp<fvVectorMatrix> tUEqn
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(
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fvm::div(phi, U)
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+ MRF.DDt(U)
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+ turbulence->divDevReff(U)
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==
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fvOptions(U)
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);
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fvVectorMatrix& UEqn = tUEqn.ref();
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UEqn.relax();
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fvOptions.constrain(UEqn);
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if (simple.momentumPredictor())
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{
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solve(UEqn == -fvc::grad(p));
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fvOptions.correct(U);
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}

‎solvers/mySimpleFoam/createFields.H‎

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Info<< "Reading field p\n" << endl;
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volScalarField p
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(
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IOobject
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(
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"p",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ,
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IOobject::AUTO_WRITE
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),
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mesh
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);
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Info<< "Reading field U\n" << endl;
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volVectorField U
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(
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IOobject
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(
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"U",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ,
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IOobject::AUTO_WRITE
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),
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mesh
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);
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#include "createPhi.H"
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label pRefCell = 0;
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scalar pRefValue = 0.0;
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setRefCell(p, simple.dict(), pRefCell, pRefValue);
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mesh.setFluxRequired(p.name());
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singlePhaseTransportModel laminarTransport(U, phi);
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autoPtr<incompressible::turbulenceModel> turbulence
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(
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incompressible::turbulenceModel::New(U, phi, laminarTransport)
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);
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#include "createMRF.H"
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#include "createFvOptions.H"

‎solvers/mySimpleFoam/mySimpleFoam.C‎

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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 | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2011-2017 OpenFOAM Foundation
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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Application
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mySimpleFoam
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Group
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grpIncompressibleSolvers
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Description
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Steady-state solver for incompressible, turbulent flows.
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\heading Solver details
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The solver uses the SIMPLE algorithm to solve the continuity equation:
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\f[
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\div \vec{U} = 0
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\f]
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and momentum equation:
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\f[
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\div \left( \vec{U} \vec{U} \right) - \div \gvec{R}
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= - \grad p + \vec{S}_U
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\f]
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Where:
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\vartable
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\vec{U} | Velocity
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p | Pressure
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\vec{R} | Stress tensor
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\vec{S}_U | Momentum source
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\endvartable
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\heading Required fields
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\plaintable
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U | Velocity [m/s]
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p | Kinematic pressure, p/rho [m2/s2]
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\<turbulence fields\> | As required by user selection
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\endplaintable
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "singlePhaseTransportModel.H"
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#include "turbulentTransportModel.H"
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#include "simpleControl.H"
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#include "fvOptions.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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argList::addNote
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(
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"Steady-state solver for incompressible, turbulent flows."
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);
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#include "postProcess.H"
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#include "addCheckCaseOptions.H"
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#include "setRootCaseLists.H"
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#include "createTime.H"
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#include "createMesh.H"
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#include "createControl.H"
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#include "createFields.H"
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#include "initContinuityErrs.H"
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turbulence->validate();
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Info<< "\nStarting time loop\n" << endl;
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while (simple.loop())
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{
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Info<< "Time = " << runTime.timeName() << nl << endl;
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// --- Pressure-velocity SIMPLE corrector
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{
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#include "UEqn.H"
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#include "pEqn.H"
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}
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laminarTransport.correct();
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turbulence->correct();
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runTime.write();
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runTime.printExecutionTime(Info);
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}
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //

‎solvers/mySimpleFoam/pEqn.H‎

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{
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volScalarField rAU(1.0/UEqn.A());
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volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p));
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surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
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MRF.makeRelative(phiHbyA);
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adjustPhi(phiHbyA, U, p);
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tmp<volScalarField> rAtU(rAU);
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if (simple.consistent())
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{
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rAtU = 1.0/(1.0/rAU - UEqn.H1());
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phiHbyA +=
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fvc::interpolate(rAtU() - rAU)*fvc::snGrad(p)*mesh.magSf();
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HbyA -= (rAU - rAtU())*fvc::grad(p);
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}
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tUEqn.clear();
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// Update the pressure BCs to ensure flux consistency
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constrainPressure(p, U, phiHbyA, rAtU(), MRF);
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// Non-orthogonal pressure corrector loop
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while (simple.correctNonOrthogonal())
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{
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fvScalarMatrix pEqn
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(
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fvm::laplacian(rAtU(), p) == fvc::div(phiHbyA)
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);
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pEqn.setReference(pRefCell, pRefValue);
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pEqn.solve();
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if (simple.finalNonOrthogonalIter())
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{
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phi = phiHbyA - pEqn.flux();
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}
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}
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#include "continuityErrs.H"
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// Explicitly relax pressure for momentum corrector
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p.relax();
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// Momentum corrector
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U = HbyA - rAtU()*fvc::grad(p);
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U.correctBoundaryConditions();
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fvOptions.correct(U);
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}

‎src/newCrossPowerLaw/Make/files‎

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newCrossPowerLaw.C
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LIB = $(FOAM_USER_LIBBIN)/libnewCrossPowerLaw

‎src/newCrossPowerLaw/Make/options‎

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EXE_INC = \
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-I$(LIB_SRC)/transportModels/incompressible/lnInclude \
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-I$(LIB_SRC)/finiteVolume/lnInclude
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LIB_LIBS = \
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-lincompressibleTransportModels \
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-lfiniteVolume

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