[ICEM] How to "crop" a structured mesh

cfdEng_ · May 1, 2020, 12:28

Problem: I have meshed with ICEM a long duct with some features inside (structured mesh). Now I need to run a simulation of just a portion of it. The duct has got a squared section and the new domain can be simply obtained but slicing it up perpendicularly to the streamwise direction.

Question: Is there a way to "crop" my mesh so that I don't have to rebuild the structured mesh from scratch?

Gert-Jan · May 1, 2020, 12:35

If you have your mesh on your screen, you can manually delete obsolete elements in the Edit-mesh menu. Isn't that a viable way?

bluebase · May 2, 2020, 06:45

Hi cfdEng_,

is there a reason you that you cannot simply split the blocking at the duct's new end?
This approach would spell:
Create a new outlet/inlet surface (geometry entity). Then split your blocking at that region. Delete (permanently) the now obsolete blocks, and re-associate the new boundary entities.

Best,
Sebastian

May 1, 2020, 12:28	How to "crop" a structured mesh	#1
cfdEng_ New Member Join Date: Apr 2020 Posts: 26 Rep Power: 6	Problem: I have meshed with ICEM a long duct with some features inside (structured mesh). Now I need to run a simulation of just a portion of it. The duct has got a squared section and the new domain can be simply obtained but slicing it up perpendicularly to the streamwise direction. Question: Is there a way to "crop" my mesh so that I don't have to rebuild the structured mesh from scratch?

May 2, 2020, 06:45		#3
bluebase Senior Member Sebastian Engel Join Date: Jun 2011 Location: Germany Posts: 567 Rep Power: 21	Hi cfdEng_, is there a reason you that you cannot simply split the blocking at the duct's new end? This approach would spell: Create a new outlet/inlet surface (geometry entity). Then split your blocking at that region. Delete (permanently) the now obsolete blocks, and re-associate the new boundary entities. Best, Sebastian cfdEng_ likes this.

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May 1, 2020, 12:35		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,928 Rep Power: 28	If you have your mesh on your screen, you can manually delete obsolete elements in the Edit-mesh menu. Isn't that a viable way?