Problem with enclosing 'cylinder with ring'-geometry with hexa blocks

pierrevalis · September 12, 2024, 11:00

Hello,

I have recently started learning to mesh with ANSA. I am currently trying to mesh the geometry as seen in picture 1, using the hexa block module. view101.jpg

The issue I am having is getting a good coverage with hexa blocks without getting sharp angles etc. In the first attempt I associated an edge with the a face on the cylinder and the back of the 'ring'. Which produced a curved edge resulting in a poor element. sharpAngle01.jpg sharpAngle301.jpg

In my second approach I used more hexa blocks and got a good fit along the geometry, except some wedge shaped hexa blocks. view3_hex03.jpg.

If anyone has any tips on how to approach this type of geometry I would really appreciate it. I know it is possible to get a decent mesh on as I have managed to do it in a different software.

Thanks!

/Anton

pierrevalis · September 13, 2024, 08:58

I managed to get a decent mesh on the geometry.

There was a module under hexa block > special tools > Tubular modeling which great for this type of geometry. Beta CAE systems on youtube had a video tutorial which proved to be very useful called "Structured hexa meshing for tubular geometries" (https://youtu.be/4HrfrV2j2Ss?feature=shared).

good01.jpg

September 12, 2024, 11:00	Problem with enclosing 'cylinder with ring'-geometry with hexa blocks	#1
pierrevalis New Member Anton Join Date: Feb 2022 Location: Sweden Posts: 6 Rep Power: 4	Hello, I have recently started learning to mesh with ANSA. I am currently trying to mesh the geometry as seen in picture 1, using the hexa block module. view101.jpg The issue I am having is getting a good coverage with hexa blocks without getting sharp angles etc. In the first attempt I associated an edge with the a face on the cylinder and the back of the 'ring'. Which produced a curved edge resulting in a poor element. sharpAngle01.jpg sharpAngle301.jpg In my second approach I used more hexa blocks and got a good fit along the geometry, except some wedge shaped hexa blocks. view3_hex03.jpg. If anyone has any tips on how to approach this type of geometry I would really appreciate it. I know it is possible to get a decent mesh on as I have managed to do it in a different software. Thanks! /Anton

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ICEM] Volume Meshing Problem; YOUR GEOMETRY HAS A HOLE	mariachi	ANSYS Meshing & Geometry	5	May 30, 2018 02:52
[DesignModeler] Enclosure (cylinder body) around imported geometry	executor	ANSYS Meshing & Geometry	4	March 29, 2016 12:08
Problem with building geometry - concentric cylinders	Rhoddwen	OpenFOAM Pre-Processing	9	December 17, 2014 10:02
[blockMesh] mesh grading problem with multiple blocks	aljaz	OpenFOAM Meshing & Mesh Conversion	0	December 21, 2010 02:33
Wall formation problem in 3D geometry	subha_meter	Main CFD Forum	0	July 23, 2010 03:46

September 13, 2024, 08:58		#2
pierrevalis New Member Anton Join Date: Feb 2022 Location: Sweden Posts: 6 Rep Power: 4	I managed to get a decent mesh on the geometry. There was a module under hexa block > special tools > Tubular modeling which great for this type of geometry. Beta CAE systems on youtube had a video tutorial which proved to be very useful called "Structured hexa meshing for tubular geometries" (https://youtu.be/4HrfrV2j2Ss?feature=shared). good01.jpg