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Forum: Main CFD Forum

October 4, 2012, 06:45

Replies: 9

Question about the way to calculate the maximum wall cell width

Views: 1,655

Posted By ski

In theory, your wall function will probably be...

In theory, your wall function will probably be applicable to such a large y+, but that dosen't mean that the results will be grid independent - they probably won't be. I'd recommend y+ around 30 if...

Forum: Main CFD Forum

October 3, 2012, 09:24

Replies: 9

Question about the way to calculate the maximum wall cell width

Views: 1,655

Posted By ski

Ok, you'll need to work out if you're turbulence...

Ok, you'll need to work out if you're turbulence model is going to try to resolve the very near wall region, or is going to apply an empirical relation (a "wall function").

If you are not using a...

Forum: Main CFD Forum

October 1, 2012, 12:37

Replies: 9

Question about the way to calculate the maximum wall cell width

Views: 1,655

Posted By ski

http://www.cfd-online.com/Tools/yplus.php ...

http://www.cfd-online.com/Tools/yplus.php

You specify the fluid properties, characteristic velocity and length scales, and the desired y+ value, and it will give an estimate on where to place the...

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