CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Grid near the wall (http://www.cfd-online.com/Forums/fluent/32856-grid-near-wall.html)

Jim Clancy January 15, 2004 11:08

Grid near the wall
 
Hi all,

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

Thanks

mateus January 15, 2004 11:45

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

ap January 15, 2004 15:09

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

Jim Clancy January 15, 2004 15:31

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


All times are GMT -4. The time now is 09:13.