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-   -   compute U in p.Eqn in interfoam (http://www.cfd-online.com/Forums/openfoam-solving/114429-compute-u-p-eqn-interfoam.html)

giack March 11, 2013 05:48

compute U in p.Eqn in interfoam
 
Hi to all,
i am a bit confused in the computed of U in the pEqn.H of interFoam
why is computed as follow?
U += rAU*fvc::reconstruct((phi - phiU)/rAUf)

I compare it with the PISO algorithm in wich U is computed as:
U -= rUA*fvc::grad(p);

thanks to all


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