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 immortality June 26, 2013 12:04

whats the mathematical equivalence of this formula?

whats the mathematical equivalence of this formula?
which equation is used in rhoCentralFoam?
Code:

```// --- Solve momentum         solve(fvm::ddt(rhoU) + fvc::div(phiUp));         U.dimensionedInternalField() =             rhoU.dimensionedInternalField()           /rho.dimensionedInternalField();         U.correctBoundaryConditions();         rhoU.boundaryField() = rho.boundaryField()*U.boundaryField();         volScalarField rhoBydt(rho/runTime.deltaT());         if (!inviscid)         {             solve             (                 fvm::ddt(rho, U) - fvc::ddt(rho, U)               - fvm::laplacian(muEff, U)               - fvc::div(tauMC)             );             rhoU = rho*U;         }```

 wyldckat June 30, 2013 07:50

Hi Ehsan,

I don't know the answer, but I've picked on the following breadcrumbs on this topic:
Check the PDF files on the last link.

Best regards,
Bruno

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