[ICEM] problems with 90 elbow and make sure y+<1 -- CFD Online Discussion Forums

March 31, 2016, 21:41	problems with 90 elbow and make sure y+<1	#1
zhixin Member 志新高(Zhixin Gao) Join Date: Aug 2014 Location: hz.China Posts: 30 Rep Power: 11	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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