# [ICEM] Split blocks in ICEM

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February 25, 2018, 08:20
Split blocks in ICEM
#1
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Join Date: Jan 2018
Posts: 12
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I am a beginner at ICEM and I tried to split the block as shown in the figure but it's not inclined the split is always vertical or horizontal so how could i split the block as shown in the figure for the blade to be contained by the split lines.
Attached Images
 u1.png (19.8 KB, 55 views)

 February 25, 2018, 09:40 #2 Member   Philipp Wiedemer Join Date: Dec 2016 Location: Munich, Germany Posts: 32 Rep Power: 8 That's not how you'd block such a geometry usually. I guess u want periodic boundary conditions on the sides, so your edges on each side need to be periodic as well. So the general approach would be like in this video: https://www.youtube.com/watch?v=7GLYQwCsc8A Far likes this.

 February 25, 2018, 11:12 #3 New Member   Join Date: Jan 2018 Posts: 12 Rep Power: 7 I am using the same technique as in the video u referred to but, my problem is at block splitting into smaller blocks step (as in minute 6:25 in your video) i need a way to split inclined as in picture attached not just horizontal and vertical as in video

 February 25, 2018, 15:19 #4 Member   Philipp Wiedemer Join Date: Dec 2016 Location: Munich, Germany Posts: 32 Rep Power: 8 I don't see the necessity to split it like that in this case, and it shouldn't work anyway. For a structured grid with Hex-Elements you need opposite edges with same node-count. In your picture there are 2 triangles in the top right and the bottom left which you just can't mesh. The topologie shown in the video e. g. O-grid around the blade and H-grid for the rest should be fine, for the inlet at least. For the outlet it's a bit more difficult because of the angle of the blade. If you can it's probably good advice to move the outlet further in the top-right corner. In this video a turbine blade with a similar geometry is being meshed with the same topologie: https://www.youtube.com/watch?v=k943AOVKL3Q Far likes this.

 February 26, 2018, 03:56 #5 New Member   Join Date: Jan 2018 Posts: 12 Rep Power: 7 Thank u for this useful answer

 Tags blade, blocking, icem, mesh, split