[chilledkroete]

Hello folks,

does anybody know why in this solver no grad(nu) & grad (U) is taken into account in Ueqn?

In interFoam one finds
fvVectorMatrix UEqn
(
fvm::ddt(rho, U)
+ fvm::div(rhoPhi, U)
- fvm::laplacian(muEff, U)
- (fvc::grad(U) & fvc::grad(muEff))
);
due to the fact that muEff is variable in space.

In nonNewtonianIcoFoam
- (fvc::grad(U) & fvc::grad(muEff))
is ignored.

Thanks for replies.