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[ICEM] Different Orthogonal Quality in ICEM and FLUENT

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Old   June 12, 2014, 09:25
Question Different Orthogonal Quality in ICEM and FLUENT
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Thibault
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Can someone help me understanding the following. I meshed a wing in ICEM CFD with great attention to the orthogonal quality. ICEM said that the quality > 0.3, which is good. When the mesh was loaded in FLUENT it says: quality > 3.44e-04 after which the simulation diverges?

Why is there a difference between the two?

Quality in Fluent


Quality in ICEM CFD
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Old   February 24, 2015, 04:55
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Yes. Take a look here:
Hexa -> small y+ problem
It's calculated differently in your version. This is fixed in version 15. It's not fixed, that ICEM hexa grids become arbitrarily bad (orthogonal quality) if you refine the wall cells more and more.
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Old   February 24, 2015, 05:06
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Thanks for the reply!
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Old   February 27, 2015, 06:19
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Hi Thibalt can you please forward that vedio of structured mesh created on that wing....
i hope u will reply as soon as possible...
mahantesh..
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Old   February 27, 2015, 06:45
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What exactly do you mean with vedio? If you meant video, I did not really use a video doing particulary that wing. It has been a while, but I found some videos that can help you doing such cases.

https://www.youtube.com/watch?v=mgjRT4WY_iA

https://www.youtube.com/watch?v=CDQcY3UARck

https://www.youtube.com/watch?v=9Bc0NBk-urM

If you search on youtube for "ICEM airfoil" or "ICEM sharp trailing edge" for example you can find quite a bit.

Good luck!
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