CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Mesh Generation & Pre-Processing (http://www.cfd-online.com/Forums/mesh-generation/)
-   -   what is the computational formula of the grid spacings Δx+,Δy+,Δz+? (http://www.cfd-online.com/Forums/mesh-generation/115107-what-computational-formula-grid-spacings-x-y-z.html)

Detian Liu March 24, 2013 05:24

what is the computational formula of the grid spacings Δx+,Δy+,Δz+?
 
Hi all,
I am a beginner of CFD, recently I have read a paper said that"The maximum grid spacing in terms of wall units is Δx+=20 in streamwise direction, Δy+=19 in spanwise direction, and Δz+=1 near the dune surface."
But I do not know the computational formula of the grid spacings Δx+,Δy+,Δz+, could you tell me the definition about it, or give me some papers to read?

flotus1 March 24, 2013 06:02

http://www.cfd-online.com/Wiki/Dimen...e_%28y_plus%29

Far April 26, 2013 12:48

Quote:

Originally Posted by Detian Liu (Post 415958)
Hi all,
I am a beginner of CFD, recently I have read a paper said that"The maximum grid spacing in terms of wall units is Δx+=20 in streamwise direction, Δy+=19 in spanwise direction, and Δz+=1 near the dune surface."
But I do not know the computational formula of the grid spacings Δx+,Δy+,Δz+, could you tell me the definition about it, or give me some papers to read?

Are you talking about LES?


All times are GMT -4. The time now is 19:07.