XiFoam.C
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23 
24 Application
25  XiFoam
26 
27 Description
28  Solver for compressible premixed/partially-premixed combustion with
29  turbulence modelling.
30 
31  Combusting RANS code using the b-Xi two-equation model.
32  Xi may be obtained by either the solution of the Xi transport
33  equation or from an algebraic expression. Both approaches are
34  based on Gulder's flame speed correlation which has been shown
35  to be appropriate by comparison with the results from the
36  spectral model.
37 
38  Strain effects are encorporated directly into the Xi equation
39  but not in the algebraic approximation. Further work need to be
40  done on this issue, particularly regarding the enhanced removal rate
41  caused by flame compression. Analysis using results of the spectral
42  model will be required.
43 
44  For cases involving very lean Propane flames or other flames which are
45  very strain-sensitive, a transport equation for the laminar flame
46  speed is present. This equation is derived using heuristic arguments
47  involving the strain time scale and the strain-rate at extinction.
48  the transport velocity is the same as that for the Xi equation.
49 
50 \*---------------------------------------------------------------------------*/
51 
52 #include "fvCFD.H"
53 #include "psiuReactionThermo.H"
56 #include "laminarFlameSpeed.H"
57 #include "ignition.H"
58 #include "Switch.H"
59 #include "pimpleControl.H"
60 #include "fvOptions.H"
61 
62 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
63 
64 int main(int argc, char *argv[])
65 {
66  #include "postProcess.H"
67 
68  #include "setRootCaseLists.H"
69  #include "createTime.H"
70  #include "createMesh.H"
71  #include "createControl.H"
72  #include "readCombustionProperties.H"
73  #include "createFields.H"
74  #include "createFieldRefs.H"
75  #include "initContinuityErrs.H"
76  #include "createTimeControls.H"
77  #include "compressibleCourantNo.H"
78  #include "setInitialDeltaT.H"
79 
80  turbulence->validate();
81 
82  // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
83 
84  Info<< "\nStarting time loop\n" << endl;
85 
86  while (pimple.run(runTime))
87  {
88  #include "readTimeControls.H"
89  #include "compressibleCourantNo.H"
90  #include "setDeltaT.H"
91 
92  runTime++;
93  Info<< "Time = " << runTime.timeName() << nl << endl;
94 
95  #include "rhoEqn.H"
96 
97  // --- Pressure-velocity PIMPLE corrector loop
98  while (pimple.loop())
99  {
100  #include "UEqn.H"
101 
102  #include "ftEqn.H"
103  #include "bEqn.H"
104  #include "EauEqn.H"
105  #include "EaEqn.H"
106 
107  if (!ign.ignited())
108  {
109  thermo.heu() == thermo.he();
110  }
111 
112  // --- Pressure corrector loop
113  while (pimple.correct())
114  {
115  #include "pEqn.H"
116  }
117 
118  if (pimple.turbCorr())
119  {
120  turbulence->correct();
121  thermophysicalTransport->correct();
122  }
123  }
124 
125  rho = thermo.rho();
126 
127  runTime.write();
128 
129  Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
130  << " ClockTime = " << runTime.elapsedClockTime() << " s"
131  << nl << endl;
132  }
133 
134  Info<< "End\n" << endl;
135 
136  return 0;
137 }
138 
139 
140 // ************************************************************************* //
pimpleNoLoopControl & pimple
engineTime & runTime
Ostream & endl(Ostream &os)
Add newline and flush stream.
Definition: Ostream.H:251
Read the control parameters used by setDeltaT.
rhoReactionThermo & thermo
Definition: createFields.H:28
rhoReactionThermophysicalTransportModel & thermophysicalTransport
Info<< "Reading field U\"<< endl;volVectorField U(IOobject("U", runTime.timeName(), mesh, IOobject::MUST_READ, IOobject::AUTO_WRITE), mesh);volScalarField rho(IOobject("rho", runTime.timeName(), mesh, IOobject::NO_READ, IOobject::AUTO_WRITE), thermo.rho());volVectorField rhoU(IOobject("rhoU", runTime.timeName(), mesh, IOobject::NO_READ, IOobject::NO_WRITE), rho *U);volScalarField rhoE(IOobject("rhoE", runTime.timeName(), mesh, IOobject::NO_READ, IOobject::NO_WRITE), rho *(e+0.5 *magSqr(U)));surfaceScalarField pos(IOobject("pos", runTime.timeName(), mesh), mesh, dimensionedScalar(dimless, 1.0));surfaceScalarField neg(IOobject("neg", runTime.timeName(), mesh), mesh, dimensionedScalar(dimless, -1.0));surfaceScalarField phi("phi", fvc::flux(rhoU));Info<< "Creating turbulence model\"<< endl;autoPtr< compressible::momentumTransportModel > turbulence(compressible::momentumTransportModel::New(rho, U, phi, thermo))
Definition: createFields.H:94
static const char nl
Definition: Ostream.H:260
messageStream Info
Execute application functionObjects to post-process existing results.
Read the control parameters used by setDeltaT.