# [ICEM] Assigning different number of nodes to parallel edges

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 July 22, 2012, 11:37 Assigning different number of nodes to parallel edges #1 New Member   Rohit Bhaya Join Date: Jul 2012 Posts: 2 Rep Power: 0 Hello everyone, I have developed a geometry in ICEM CFD, whose blocking structure is defined in the pic below. I have been trying to assign different nodes to the edges A & B (in the fig), but wasn't successful in doing so. On assign the nodes to one of the edge(blocking --> Pre mesh params --> edge params), it gets updated to the other parallel edges. I have tried - 1.) specifying the number of nodes to each and every edge 2.) converting the nature of blocks to free/swept instead of mapped but the result would be same. I require that the edges A & C(in the fig) should have the same number of nodes, which would be different from B & D. Can anyone, please guide me on how to pursue with this problem. Thanks Rohit kmou likes this. Last edited by Rohit; July 22, 2012 at 11:41. Reason: figure not uploaded properly

 July 22, 2012, 15:45 #2 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,648 Rep Power: 26 This is impossible if you want to create a hexahedral mesh. Opposing edges of a block must have the same number of nodes.

 September 23, 2015, 20:35 #3 New Member   Cristian Osorio Join Date: Aug 2015 Posts: 2 Rep Power: 0 Hi, flotus1, related to the same question, can be parallel edges in different blocks, dissociated?

September 22, 2017, 09:16
#4
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Camille Bilger
Join Date: Jul 2013
Posts: 43
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Quote:
 Originally Posted by flotus1 This is impossible if you want to create a hexahedral mesh. Opposing edges of a block must have the same number of nodes.
HI Flotus1,

I have the same problem but my edges are parallel but not of the same length... so obviously I have calculated on paper the number of nodes each edge would need to have to avoid hanging nodes... but I cannot set those numbers, since ICEM changes them, hence creating hanging nodes.

 Tags icem cfd 13.0

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