[ANSYS Meshing] Unable to obtain a conformal quad mesh

NavierStoked · July 24, 2019, 11:03

Hey everyone

I'm trying to mesh a blood vessel with 3 different zones (1 porous and 2 non porous). I made the geometry in SpaceClaim and then merged the bodies in Design Modeller.

The porous zone has a section on the surface where I plan to use a UDF (here shown by the rectangular middle section). My issue is that whenever I'm trying to mesh my geometry, I'm ending up with quads in the non porous sections and tris in the middle section. Any idea why this is happening? I want to have a uniform quad mesh along the entire geometry.

I was suggested to use the Slice feature in Design Modeller but that didn't work. Neither did multi zone meshing.

Attached is a screenshot of the geometry in Space Claim and Mesh setup. I am using ANSYS 18.2 (because that's the latest offered by my university)

Thank you in advance for your help
Image links:
https://imgur.com/hq4OECS
https://imgur.com/eOxaju6

Additional links to file:
- https://drive.google.com/open?id=1Rf...vlAmY2iwacEQRO

siw · July 25, 2019, 06:56

By default ANSYS Meshing will apply the Sweep Method to any sweepable body and the Patch Conformal Tetra Method to any non sweepable bodies. If you do not want these when you must assign the Mesh Method to the body/bodies. Try the MultiZone method but you may have to help the method and break up the geometry.

NavierStoked · July 25, 2019, 12:47

Hi
I have tried breaking up the middle geometry section and I am now able to have a conformal quad mesh along my geometry. Thanks for the input!

July 24, 2019, 11:03	Unable to obtain a conformal quad mesh	#1
NavierStoked New Member Girindra Join Date: Jun 2019 Location: Cape Town, South Africa Posts: 2 Rep Power: 0	Hey everyone I'm trying to mesh a blood vessel with 3 different zones (1 porous and 2 non porous). I made the geometry in SpaceClaim and then merged the bodies in Design Modeller. The porous zone has a section on the surface where I plan to use a UDF (here shown by the rectangular middle section). My issue is that whenever I'm trying to mesh my geometry, I'm ending up with quads in the non porous sections and tris in the middle section. Any idea why this is happening? I want to have a uniform quad mesh along the entire geometry. I was suggested to use the Slice feature in Design Modeller but that didn't work. Neither did multi zone meshing. Attached is a screenshot of the geometry in Space Claim and Mesh setup. I am using ANSYS 18.2 (because that's the latest offered by my university) Thank you in advance for your help Image links: https://imgur.com/hq4OECS https://imgur.com/eOxaju6 Additional links to file: - https://drive.google.com/open?id=1Rf...vlAmY2iwacEQRO

July 25, 2019, 06:56		#2
siw Senior Member Stuart Join Date: Jul 2009 Location: Portsmouth, England Posts: 733 Rep Power: 25	By default ANSYS Meshing will apply the Sweep Method to any sweepable body and the Patch Conformal Tetra Method to any non sweepable bodies. If you do not want these when you must assign the Mesh Method to the body/bodies. Try the MultiZone method but you may have to help the method and break up the geometry. NavierStoked likes this.

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July 25, 2019, 12:47		#3
NavierStoked New Member Girindra Join Date: Jun 2019 Location: Cape Town, South Africa Posts: 2 Rep Power: 0	Hi I have tried breaking up the middle geometry section and I am now able to have a conformal quad mesh along my geometry. Thanks for the input!