CFD Online Discussion Forums - laplacian(A,p) and div(A*fvc::grad(p))? difference?

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sharonyue

August 25, 2013 21:57

laplacian(A,p) and div(A*fvc::grad(p))? difference?

Hi All,

In mathematics, I think laplacian(A,p) and div(A*fvc::grad(p)) are the same,

so can I turn this code into:

Code:

fvScalarMatrix pEqn

            (

                fvm::laplacian(rAU, p) == fvc::div(phiHbyA)

            );



fvScalarMatrix pEqn

            (

                fvm::div(A*fvc::grad(p)) == fvc::div(phiHbyA)

            );

Thanks for your attention.

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