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foam-extend4.1-coherent-io/applications/solvers/compressible/steadyCompressibleFoam/rhoFromP.H

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{
// Calculate density from pressure
rho.storePrevIter();
rho = thermo.rho();
// Bound rho
volScalarField R = thermo.Cp() - thermo.Cv();
volScalarField rhoMin = pMin/(R*TMax);
volScalarField rhoMax = pMax/(R*TMin);
rho = Foam::min(rho, rhoMax);
rho = Foam::max(rho, rhoMin);
rho.relax();
}