132 lines
4.2 KiB
C
132 lines
4.2 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Application
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XiFoam
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Description
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Solver for compressible premixed/partially-premixed combustion with
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turbulence modelling.
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Combusting RANS code using the b-Xi two-equation model.
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Xi may be obtained by either the solution of the Xi transport
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equation or from an algebraic exression. Both approaches are
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based on Gulder's flame speed correlation which has been shown
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to be appropriate by comparison with the results from the
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spectral model.
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Strain effects are encorporated directly into the Xi equation
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but not in the algebraic approximation. Further work need to be
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done on this issue, particularly regarding the enhanced removal rate
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caused by flame compression. Analysis using results of the spectral
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model will be required.
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For cases involving very lean Propane flames or other flames which are
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very strain-sensitive, a transport equation for the laminar flame
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speed is present. This equation is derived using heuristic arguments
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involving the strain time scale and the strain-rate at extinction.
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the transport velocity is the same as that for the Xi equation.
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "hhuCombustionThermo.H"
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#include "turbulenceModel.H"
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#include "laminarFlameSpeed.H"
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#include "ignition.H"
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#include "Switch.H"
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#include "pimpleControl.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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# include "setRootCase.H"
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# include "createTime.H"
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# include "createMesh.H"
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pimpleControl pimple(mesh);
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# include "readCombustionProperties.H"
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# include "readGravitationalAcceleration.H"
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# include "createFields.H"
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# include "initContinuityErrs.H"
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# include "createTimeControls.H"
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# include "compressibleCourantNo.H"
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# include "setInitialDeltaT.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Info<< "\nStarting time loop\n" << endl;
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while (runTime.run())
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{
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# include "readTimeControls.H"
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# include "compressibleCourantNo.H"
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# include "setDeltaT.H"
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runTime++;
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Info<< "Time = " << runTime.timeName() << nl << endl;
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// --- Pressure-velocity PIMPLE corrector loop
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while (pimple.loop())
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{
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# include "rhoEqn.H"
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# include "UEqn.H"
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# include "ftEqn.H"
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# include "bEqn.H"
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# include "huEqn.H"
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# include "hEqn.H"
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if (!ign.ignited())
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{
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hu == h;
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}
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// --- PISO loop
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while (pimple.correct())
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{
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# include "pEqn.H"
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}
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turbulence->correct();
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}
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rho = thermo.rho();
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runTime.write();
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Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
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<< " ClockTime = " << runTime.elapsedClockTime() << " s"
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<< nl << endl;
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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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// ************************************************************************* //
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