63da3e9afc
At the specie level:
hs = sensible enthalpy
ha = absolute (what was total) enthalpy
es = sensibly internal energy
ea = absolute (what was total) internal energy
At top-level
Rename total enthalpy h -> ha
Rename sensible enthalpy hs -> h
Combined h, hs, e and es thermo packages into a single structure.
Thermo packages now provide "he" function which may return either enthalpy or
internal energy, sensible or absolute according to the run-time selected form
alphaEff now returns the effective diffusivity for the particular energy which
the thermodynamics package is selected to solve for.
157 lines
5.0 KiB
C
157 lines
5.0 KiB
C
/*---------------------------------------------------------------------------*\
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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 OpenFOAM Foundation
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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
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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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PDRFoam
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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 incorporated 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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For large flames e.g. explosions additional modelling for the flame
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wrinkling due to surface instabilities may be applied.
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PDR (porosity/distributed resistance) modelling is included to handle
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regions containing blockages which cannot be resolved by the mesh.
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The fields used by this solver are:
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betav: Volume porosity
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Lobs: Average diameter of obstacle in cell (m)
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Aw: Obstacle surface area per unit volume (1/m)
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CR: Drag tensor (1/m)
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CT: Turbulence generation parameter (1/m)
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Nv: Number of obstacles in cell per unit volume (m^-2)
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nsv: Tensor whose diagonal indicates the number to substract from
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Nv to get the number of obstacles crossing the flow in each
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direction.
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "psiuReactionThermo.H"
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#include "RASModel.H"
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#include "laminarFlameSpeed.H"
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#include "XiModel.H"
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#include "PDRDragModel.H"
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#include "ignition.H"
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#include "Switch.H"
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#include "bound.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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#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 "readTimeControls.H"
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#include "compressibleCourantNo.H"
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#include "setInitialDeltaT.H"
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pimpleControl pimple(mesh);
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scalar StCoNum = 0.0;
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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<< "\n\nTime = " << runTime.timeName() << endl;
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#include "rhoEqn.H"
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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 "UEqn.H"
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// --- Pressure corrector loop
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while (pimple.correct())
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{
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#include "bEqn.H"
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#include "ftEqn.H"
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#include "hauEqn.H"
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#include "haEqn.H"
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if (!ign.ignited())
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{
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hau == ha;
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}
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#include "pEqn.H"
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}
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if (pimple.turbCorr())
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{
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turbulence->correct();
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}
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}
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runTime.write();
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Info<< "\nExecutionTime = "
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<< runTime.elapsedCpuTime()
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<< " s\n" << endl;
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}
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Info<< "\n end\n";
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return 0;
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}
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// ************************************************************************* //
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