1 /*---------------------------------------------------------------------------*\
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5 \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
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29 Solver for compressible premixed/partially-premixed combustion with
32 Combusting RANS code using the b-Xi two-equation model.
33 Xi may be obtained by either the solution of the Xi transport
34 equation or from an algebraic exression. Both approaches are
35 based on Gulder's flame speed correlation which has been shown
36 to be appropriate by comparison with the results from the
39 Strain effects are incorporated directly into the Xi equation
40 but not in the algebraic approximation. Further work need to be
41 done on this issue, particularly regarding the enhanced removal rate
42 caused by flame compression. Analysis using results of the spectral
43 model will be required.
45 For cases involving very lean Propane flames or other flames which are
46 very strain-sensitive, a transport equation for the laminar flame
47 speed is present. This equation is derived using heuristic arguments
48 involving the strain time scale and the strain-rate at extinction.
49 the transport velocity is the same as that for the Xi equation.
51 For large flames e.g. explosions additional modelling for the flame
52 wrinkling due to surface instabilities may be applied.
54 PDR (porosity/distributed resistance) modelling is included to handle
55 regions containing blockages which cannot be resolved by the mesh.
57 \*---------------------------------------------------------------------------*/
60 #include "hhuCombustionThermo.H"
62 #include "laminarFlameSpeed.H"
64 #include "PDRDragModel.H"
69 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
71 int main(int argc, char *argv[])
73 #include "setRootCase.H"
75 #include "createTime.H"
76 #include "createMesh.H"
77 #include "readCombustionProperties.H"
78 #include "readGravitationalAcceleration.H"
79 #include "createFields.H"
80 #include "initContinuityErrs.H"
81 #include "readTimeControls.H"
82 #include "CourantNo.H"
83 #include "setInitialDeltaT.H"
87 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
89 Info<< "\nStarting time loop\n" << endl;
93 #include "readTimeControls.H"
94 #include "readPISOControls.H"
95 #include "CourantNo.H"
96 #include "setDeltaT.H"
100 Info<< "\n\nTime = " << runTime.timeName() << endl;
106 for (int corr=1; corr<=nCorr; corr++)
121 turbulence->correct();
125 Info<< "\nExecutionTime = "
126 << runTime.elapsedCpuTime()
136 // ************************************************************************* //