[ICEM] Grid Convergence Index study for a hybrid mesh

j_h_86 · December 4, 2012, 11:26

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, 12:03

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, 11:45

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, 11:26	Grid Convergence Index study for a hybrid mesh	#1
j_h_86 Member Johannes Ringborn Join Date: Nov 2012 Posts: 39 Rep Power: 2	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 4, 2012, 12:03		#2
Far Super Moderator Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,093 Blog Entries: 5 Rep Power: 30	There is TCL code for ICEM for hybrid meshes for the grid convergence study. Search the forum, you will find it . __________________ Best Regards Far http://cfd-consultancy.webs.com/

December 6, 2012, 11:45		#3
j_h_86 Member Johannes Ringborn Join Date: Nov 2012 Posts: 39 Rep Power: 2	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!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Convergence	Centurion2011	FLUENT	5	February 14, 2012 09:16
2D Mesh Generation Tutorial for GMSH	aeroslacker	Open Source Meshers: Gmsh, Netgen, CGNS, ...	12	January 19, 2012 03:52
Naca 0012 (compressible and inviscid) flow convergence problem	bipulsaha	FLUENT	1	July 6, 2011 07:51
snappyHexMesh won't work - zeros everywhere!	sc298	OpenFOAM Native Meshers: snappyHexMesh and Others	2	March 27, 2011 21:11
hybrid mesh	Fabrizio	FLUENT	4	August 16, 2006 06:41