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Forum: Main CFD Forum

May 31, 2011, 03:59

Replies: 8

numerical diffusion in tetrahedral grids

Views: 2,606

Posted By Lilly

Thank you for your help Baserinia! I don't...

Thank you for your help Baserinia!

I don't have access to ICEM, but to Gambit and Tgrid. Did you work with them or do you know, whether I can build such a butterfly-grid using them?
Lilly

Forum: Main CFD Forum

May 30, 2011, 07:40

Replies: 8

numerical diffusion in tetrahedral grids

Views: 2,606

Posted By Lilly

Thank you sail and baserinia for your help! ...

Thank you sail and baserinia for your help!

I will try to improve the cfl-number timestep size and y+.

Unfortunately, my geometry has a bifurcation which makes it really hard to create a...

Forum: Main CFD Forum

May 27, 2011, 10:13

Replies: 8

numerical diffusion in tetrahedral grids

Views: 2,606

Posted By Lilly

minimise/avoid numerical diffusion in tetrahedral mesh

Thank you for your help, sail!

Does anybody know how I can minimise or (in best case) avoid this numerical diffusion?
I am using the QUICK Scheme know which leads to a much better result, but is...

Forum: Main CFD Forum

May 6, 2011, 09:49

Replies: 8

numerical diffusion in tetrahedral grids

Views: 2,606

Posted By Lilly

numerical diffusion in tetrahedral grids

Hello everybody,

I made some cfd-simulations to get the mass fraction of a species passing a tube inside another type of species. Afterwards I was calculating kind of the ”spread” that the...

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