[ICEM] Meshing a small gap between cylinders

vbraga · June 7, 2016, 14:14

I'm trying to generate a mesh in the clearance between two concentric cylinders, like a piston-cylinder assembly. The problem is that the gap is much smaller than the diameter: the gap is ~1e-6 and the diameter ~1e-3.
I tried to generate the mesh with ICEM, but I didn't succed. For starters it was very hard to select the surfaces and create the body, in order to do the blocking. Then, I've noticed that sometimes ICEM merged my two circles, I belive because they are too close to each other...
I'm really having a hard time trying to accomplish this, can anyone share any information on meshing this kind of geometry? Which strategy, software etc. Do I have to change the tolerance or something like this?

diamondx · June 9, 2016, 10:24

picture please !!!!! geometry if possible...

June 7, 2016, 14:14	Meshing a small gap between cylinders	#1
vbraga New Member Vitor Braga Join Date: Jun 2016 Posts: 4 Rep Power: 9	I'm trying to generate a mesh in the clearance between two concentric cylinders, like a piston-cylinder assembly. The problem is that the gap is much smaller than the diameter: the gap is ~1e-6 and the diameter ~1e-3. I tried to generate the mesh with ICEM, but I didn't succed. For starters it was very hard to select the surfaces and create the body, in order to do the blocking. Then, I've noticed that sometimes ICEM merged my two circles, I belive because they are too close to each other... I'm really having a hard time trying to accomplish this, can anyone share any information on meshing this kind of geometry? Which strategy, software etc. Do I have to change the tolerance or something like this?

June 9, 2016, 10:24		#2
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	picture please !!!!! geometry if possible... __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

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