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September 19, 2011, 17:20 |
mesh adaptation
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#1 |
Super Moderator
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Dear CFX experts
As I know that we can adapt the mesh in CFX Pre. But I cant find the Y+ in the variable list? Any body has idea how to get the mesh adaptation based on the Y+. Thank in advance |
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September 19, 2011, 18:33 |
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#2 |
Senior Member
Bruno
Join Date: Mar 2009
Location: Brazil
Posts: 277
Rep Power: 21 |
Hi Far,
I'll have to check on this tomorrow, but I believe y+ is only calculated at walls. If that's the case it is not a volumetric variable and cannot therefore be used as a mesh adaption criteria. BUT... you could create an algebraic additional variable that calculates y+ manually, and then use this variable to adapt your mesh. That being said, if what you're trying to do is to automatically refine your mesh based on y+, what you should do instead is manually generate a few meshes with decreasing y+ and compare their results. I don't think using mesh adaption is the correct approach in here, since you won't get a nice, smooth and gradually increasing mesh spacing near the wall by using mesh adaption. Cheers |
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