[ICEM] Grid Convergence Index study for a hybrid mesh

j_h_86 · December 4, 2012, 12:26

Dear all,

I plan to do a GCI study as proposed by Roche. It is clear to me how this works for a structured mesh, but I have my difficulties when applying this work-through on a hybrid mesh.

I use a layer of 50 prism to resolve the boundary layer of my geometry. Further away from the geometry I use tetraeders to discretice the farfield.

How would you attack this problem in ICEMCFD, to enhance the quality by the factor 2 in each direction?

Is this a known limitation of an unstructured (hybrid) mesh or can you give me a hint?

Thank you very much in advance!

Far · December 4, 2012, 13:03

There is TCL code for ICEM for hybrid meshes for the grid convergence study. Search the forum, you will find it .

j_h_86 · December 6, 2012, 12:45

Thank you Sir for the answer.

I read a bit about ICEM scripting but I could not get any link to my problem of doing a GCI study. I also used the search function (

) but could not find anything related to this problem. Can you give me a hint where I might be more lucky?

Best regards!

December 4, 2012, 12:26	Grid Convergence Index study for a hybrid mesh	#1
j_h_86 Member Johannes Ringborn Join Date: Nov 2012 Posts: 40 Rep Power: 14	Dear all, I plan to do a GCI study as proposed by Roche. It is clear to me how this works for a structured mesh, but I have my difficulties when applying this work-through on a hybrid mesh. I use a layer of 50 prism to resolve the boundary layer of my geometry. Further away from the geometry I use tetraeders to discretice the farfield. How would you attack this problem in ICEMCFD, to enhance the quality by the factor 2 in each direction? Is this a known limitation of an unstructured (hybrid) mesh or can you give me a hint? Thank you very much in advance!

December 6, 2012, 12:45		#3
j_h_86 Member Johannes Ringborn Join Date: Nov 2012 Posts: 40 Rep Power: 14	Thank you Sir for the answer. I read a bit about ICEM scripting but I could not get any link to my problem of doing a GCI study. I also used the search function () but could not find anything related to this problem. Can you give me a hint where I might be more lucky? Best regards!

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December 4, 2012, 13:03		#2
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	There is TCL code for ICEM for hybrid meshes for the grid convergence study. Search the forum, you will find it .