[callumso]

Hi dear Foamers,

I have been fiddling with different gradient schemes for my simulations. I used the following settings without problems:

grad(p) Gauss linear;
grad(p) Gauss upwind phi;

My simulations only run with the following setting:
grad(p) cellLimited Gauss upwind phi 1.0;

I am concerned about the "upwind" scheme which I think would be very diffusive.

As far as I understand, the interpolation scheme can be any scheme that calculates the face value from the cell values. Therefore I tried to experiment with the TVD interpolation schemes like
grad(p) Gauss vanLeer01 phi;

But this option doesn't work as the code runs into segmentation fault. I also tried some other schemes as well as linearUpwind. But just don't work. I have difficulty sussing out what parameters are needed from the code. Could anyone explain a bit how this gradient scheme can be set? Thanks in advance.

Callum