[ANSYS Meshing] Meshing takes forever

yahmed · October 29, 2015, 17:33

Hello Ansys Experts,

I am trying to mesh my model using tetrahedrals method in patch independent mode. I left it for more than 12 hours and it was not generated on a machine with 64 cores and 512 GB RAM!!!!!!! The model is large but I don't think this is a reasonable time !!!

I did meshing for the model before using Cutcell method in about 3 hours (on a 12 cores and 32 GB RAM PC) and generated 10 million cells, but I want to change the meshing method because I have read that cutcell mesh doesn't go well with multiphase model (VOF)...

Any ideas here? What is the typical time required for meshing? What is the best method of meshing for VOF model??

Thanks,
Yousra

Antanas · October 29, 2015, 22:40

Quote:

Originally Posted by yahmed

Hello Ansys Experts,

I am trying to mesh my model using tetrahedrals method in patch independent mode. I left it for more than 12 hours and it was not generated on a machine with 64 cores and 512 GB RAM!!!!!!! The model is large but I don't think this is a reasonable time !!!

I did meshing for the model before using Cutcell method in about 3 hours (on a 12 cores and 32 GB RAM PC) and generated 10 million cells, but I want to change the meshing method because I have read that cutcell mesh doesn't go well with multiphase model (VOF)...

Any ideas here? What is the typical time required for meshing? What is the best method of meshing for VOF model??

Thanks,
Yousra

Maybe element size is too low? Try to generate coarse mesh first and then decrease element size gradually.

yahmed · October 29, 2015, 23:13

Quote:

Originally Posted by Antanas

Maybe element size is too low? Try to generate coarse mesh first and then decrease element size gradually.

Thank Antanas for your reply. No actually I am trying a coarse size!!

Antanas · October 30, 2015, 00:22

Quote:

Originally Posted by yahmed

Thank Antanas for your reply. No actually I am trying a coarse size!!

Very strange. Patch independent tetrahedrons must be fast and robust... Maybe there's another reason. Can you share your project?

yahmed · October 30, 2015, 00:44

Quote:

Originally Posted by Antanas

Very strange. Patch independent tetrahedrons must be fast and robust... Maybe there's another reason. Can you share your project?

Yes sure no problem, can you give me your email address please?

Antanas · October 30, 2015, 08:44

Quote:

Originally Posted by yahmed

Yes sure no problem, can you give me your email address please?

No

Post link here

October 29, 2015, 17:33	Meshing takes forever	#1
yahmed New Member Join Date: Jan 2014 Posts: 18 Rep Power: 12	Hello Ansys Experts, I am trying to mesh my model using tetrahedrals method in patch independent mode. I left it for more than 12 hours and it was not generated on a machine with 64 cores and 512 GB RAM!!!!!!! The model is large but I don't think this is a reasonable time !!! I did meshing for the model before using Cutcell method in about 3 hours (on a 12 cores and 32 GB RAM PC) and generated 10 million cells, but I want to change the meshing method because I have read that cutcell mesh doesn't go well with multiphase model (VOF)... Any ideas here? What is the typical time required for meshing? What is the best method of meshing for VOF model?? Thanks, Yousra

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