Grid near the wall
 

Hi all,

what is the best grid type near the wall, hexa or tetra? and why?

Thanks

Re: Grid near the wall
 

Hi!

In any case the hex structured grid will work better and faster for you. The problem are cases with complicated geometry - thats why we use tet grid. The region near the wall shoul be made with hex grid since you have big gradients of velocity/temperature...in the near wall regions and the hex grid allined parralel to the wall provides you with better resolution.

regards

MATEUS

Re: Grid near the wall
 

I agree with Mateus. If possible, hex grids works better. Switch to tet grids only if you can't easily decompose your domain in order to mesh it using hex.

Hi :)

ap

Re: Grid near the wall
 

Thanks Mat and ap. But the FV discretization will end up with cell surface intergrals disregard the cell type, am I right? ..Let us discuss it more here. Thanks

Regards Ahmed