Hello Friends I was wonderi
I was wondering if there is a mistake in the PISO loop for the interFoam , rasInterFoam solvers.
In Dr. Rusche's PHD page 148,
(Del.V) = 0 , but at the interface density is rapidly changing so shouln't (Del.(rho*V)= 0);
Looking at the PISO loop in rasInterFoam we have laplacian(rUAf,pd)==div(phi) .
should this be changed to something like
laplacian(rUAF*rho,pd) == div(phi*rho)
Thanks a lot in advance
Dear Friends Could someone
Could someone comment on this post ?
No, because the interFoam solv
No, because the interFoam solver conserves volume not mass (both fluid are assumed incompressible). This is done specifically to get around the problem of large gradients at the interface.
Hi Eugene Thanks a lot for
Thanks a lot for your reply. I have just one more question.
In equation of 4.28 of henrik rusche's phd thesis we have phi=phi* - (1/A_D)_face * |S|*faceGradient(P)
But in 4.30 we have something like
div( (1/A_D)_face , gradient(P) ] = diver.(phi*)
How is |S|*faceGradient(P) converted to gradient(P) ??
In all openfoam solvers the equation 4.30 is implemented and they are dimensionally correct.
Another question if rUA = 1.0/UEqn.A()
is rUAf = rUA interpolated on the face and multiplied with surface area or it is just rUA interpolated to the faces
Thanks a lot once again
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