[ICEM] Dissociate blocks number of nodes

gi12 · February 16, 2012, 10:53

Hi all,
Suppose we have a Y shape geometry. We get three blocks to hexa meshing this geometry. The upper part of the Y shape would get two blocks one each branch; the number of nodes in each block are equal. If we change the number of nodes at any edge both block nodes number will change.
My question is that I need fewer number of nodes in one of the two blocks and keep the other block nodes constant. I know that Refine block option allows me to add extra nodes
Any help would be very mush appreciated
Kind Regards
GI

lnastalek · February 22, 2012, 10:41

If I may, I would like to add to this post.

I am struggling with an issue that restricts me from changing node distributions freely. I have a "cake slice" of a valve, and this valve possesses a strainer. The strainer holes are to be modelled. The problem is when it comes to meshing the triangular shape resulting from the slice. In gambit I would have used the tri-primitive scheme, and then sweep it downwards. Here I do a sort of Y Block. But. When I try to change the number of nodes on the Y branches, so that the side walls remain periodic (evenly distributed), this alters an even distribution of nodes on other edges back at the strainer. I will upload a picture for a better view, given some time.

I hope both questions receive answers.

rikio · February 23, 2012, 23:33

Change the node number on one edge of one of the Y block would result in a change to another block. But next edge which intersecting with the previous mentioned one would not. You can add/decrease the number to work out a specific mesh resolution.

February 16, 2012, 10:53	Dissociate blocks number of nodes	#1
gi12 New Member Join Date: Nov 2010 Posts: 22 Rep Power: 16	Hi all, Suppose we have a Y shape geometry. We get three blocks to hexa meshing this geometry. The upper part of the Y shape would get two blocks one each branch; the number of nodes in each block are equal. If we change the number of nodes at any edge both block nodes number will change. My question is that I need fewer number of nodes in one of the two blocks and keep the other block nodes constant. I know that Refine block option allows me to add extra nodes Any help would be very mush appreciated Kind Regards GI

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February 22, 2012, 10:41		#2
lnastalek New Member Lucjan Nastalek Join Date: Dec 2010 Location: Gdansk, Poland Posts: 5 Rep Power: 16	If I may, I would like to add to this post. I am struggling with an issue that restricts me from changing node distributions freely. I have a "cake slice" of a valve, and this valve possesses a strainer. The strainer holes are to be modelled. The problem is when it comes to meshing the triangular shape resulting from the slice. In gambit I would have used the tri-primitive scheme, and then sweep it downwards. Here I do a sort of Y Block. But. When I try to change the number of nodes on the Y branches, so that the side walls remain periodic (evenly distributed), this alters an even distribution of nodes on other edges back at the strainer. I will upload a picture for a better view, given some time. I hope both questions receive answers.

February 23, 2012, 23:33		#3
rikio Senior Member Rikio Join Date: Mar 2009 Location: SH, China Posts: 182 Blog Entries: 1 Rep Power: 17	Change the node number on one edge of one of the Y block would result in a change to another block. But next edge which intersecting with the previous mentioned one would not. You can add/decrease the number to work out a specific mesh resolution.