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[ICEM] problems with 90 elbow and make sure y+<1

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Old   March 31, 2016, 21:41
Default problems with 90 elbow and make sure y+<1
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志新高(Zhixin Gao)
Join Date: Aug 2014
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Hi all,
I use ICEM to get structure hexa mesh. Here is how I block the elbow.(due to y+<1, the first layer is less than 0.00085mm)

But when I set nodes number either more than 33 or less than 33 in the Circumferential direction, there will exist negative volume

By the way, the contours of y+ is also strange(this time I use more block at the elbow part)

this is the cell mass fraction of first layer, and is seems to be wrong.

so anyone can help me?
Thanks.
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