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foam-extend4.1-coherent-io/applications/solvers/compressible/steadyCompressibleMRFFoam/iEqn.H

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C

{
// Solve the rothalpy equation
T.storePrevIter();
// Create relative velocity
Urel == U;
mrfZones.relativeVelocity(Urel);
// Create rotational velocity (= omega x r)
Urot = U - Urel;
fvScalarMatrix iEqn
(
fvm::ddt(rho, i)
+ fvm::div(phi, i)
- fvm::laplacian(turbulence->alphaEff(), i)
==
// Viscous heating: note sign (devRhoReff has a minus in it)
- (turbulence->devRhoReff() && fvc::grad(Urel))
);
iEqn.relax();
eqnResidual = iEqn.solve().initialResidual();
maxResidual = max(eqnResidual, maxResidual);
// Calculate enthalpy out of rothalpy
h = i + 0.5*magSqr(Urot);
h.correctBoundaryConditions();
// Bound the enthalpy using TMin and TMax
volScalarField Cp = thermo.Cp();
h = Foam::min(h, TMax*Cp);
h = Foam::max(h, TMin*Cp);
h.correctBoundaryConditions();
// Re-initialise rothalpy based on limited enthalpy
i = h - 0.5*magSqr(Urot);
thermo.correct();
}