# [ICEM] ICEM blocking/meshing multiple cylinders

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 October 7, 2019, 21:54 ICEM blocking/meshing multiple cylinders #1 New Member   Nick Thomas Join Date: Sep 2018 Posts: 27 Rep Power: 7 I'm new to ICEM and trying to block and mesh the geometry below. Capture.JPG Capture2.JPG Capture3.JPG It's a circular domain because it'll be rotating within another rectangular domain. I have the outside how I'd like it using an o-grid, but I'm unsure of how to block/mesh the three cylinders on the inside. I've tried splitting them in a few different ways and adding o-grids without much success. I'd like to have an inflation layer on the cylinders. Any suggestions?

 October 8, 2019, 01:23 #2 Senior Member   M Join Date: Dec 2017 Posts: 645 Rep Power: 12 I would maybe go with creating a hexagon kind of base block (two trapezoids and a square in the middle) and apply the outer o-grid to it. Then another o-grid for the next circle and 3 more (smaller ones) for the inner cylinders if you need inflations. Or, you can try the Multizone-Meshing. There is a tutorial (from ANSYS) on youtube with a quite similar geometry, I think it could work well for that case and gives you what you are looking for.

October 8, 2019, 11:11
#3
Senior Member

Sebastian Engel
Join Date: Jun 2011
Location: Germany
Posts: 566
Rep Power: 20
Quote:
 Originally Posted by nick.l.thomas Any suggestions?
Hi Nick,

a while ago, I have proposed a solution to a very similar geometry. Have a look here: Meshing 3 holes geometry

The underlying structure for the "inner" cylinder could be prepared as shown in the sketches in that thread.
Your blocking would keep the additional o-grid you already have set. However, the verticies from that structure likely have to be adapted to get an optimal blocking (make the blocks as square as possible).

Best regards,
Sebastian

 October 8, 2019, 11:31 #4 New Member   Nick Thomas Join Date: Sep 2018 Posts: 27 Rep Power: 7 Thank you both! The youtube tutorial and that old post both look very helpful, I'll give them a try.

 Tags blocking, icem, multiple cylinders