[TGrid] hybrid mesh-huge tets

Lilly · March 9, 2011, 08:57

Hello,

I generated a hybrid mesh including prisms close to the surface and tets in the middle of the geometry with the help of Tgrid. Unfortunately the tets become pretty huge in the middle of the geometry. I tried to fix the problem via setting a smaller "Max Cell Size" value at "Refinement" and I am getting a larger number of elements then, but the tets in the middle of the geometry do not change a lot. Does anybody have an idea what to do?

Thanks a million,
Lilly

sandeep_tu · March 11, 2011, 11:05

you have to change the "growth rate" in "Refinement" try with smaller value

Lilly · March 11, 2011, 11:49

Thank you!
Unfortunately I cannot find this option at "Refinement" (or somewhere else).
Maybe it's because I am using an old version (4.0.16).
I just can find: Max Cell Size, Max Cell Skew, Max Boundary Cell Skew, Min Boundary Cell Skew, Min Boundary Closeness and Boundary Cell Height at "Tri/Tet-->Refinement". Is there maybe another option or can I change the "growth rate" in a different way?

Lilly

sandeep_tu · March 14, 2011, 05:33

May be try with command in the Tgrid console

1. just type inter first then you will see all options
boundary/ exit mesh/
display/ file/ report/

2. and then type mesh (enter) tritet (enter) controls (enter) cell-size-function (enter) geometric (enter) and then you will see the default value in square brackets and then type the value what ever you want and enter. thats it the value is changed and do the tritet mesh as normal

this is the method in TGrid 3D 5.0.6

cheers

March 9, 2011, 08:57	hybrid mesh-huge tets	#1
Lilly Senior Member Join Date: Feb 2011 Posts: 140 Rep Power: 15	Hello, I generated a hybrid mesh including prisms close to the surface and tets in the middle of the geometry with the help of Tgrid. Unfortunately the tets become pretty huge in the middle of the geometry. I tried to fix the problem via setting a smaller "Max Cell Size" value at "Refinement" and I am getting a larger number of elements then, but the tets in the middle of the geometry do not change a lot. Does anybody have an idea what to do? Thanks a million, Lilly

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ICEM] Hexa mesh, curve mesh setup, bunching law	Anorky	ANSYS Meshing & Geometry	4	November 12, 2014 01:27
[ICEM] Using a hybrid mesh for a simple pipe	Udio_NT	ANSYS Meshing & Geometry	17	October 18, 2012 15:42
engrid -> save as .stl with boundarie codes	Zymon	enGrid	31	August 29, 2011 14:40
[ICEM] hybrid mesh	vmlxb6	ANSYS Meshing & Geometry	5	March 9, 2011 14:44
[Other] hexa vs hybrid mesh convergence	Viais	OpenFOAM Meshing & Mesh Conversion	0	April 23, 2010 11:39

March 11, 2011, 11:05		#2
sandeep_tu Member Sandeep Join Date: Apr 2009 Location: Munich, Germany Posts: 30 Rep Power: 17	you have to change the "growth rate" in "Refinement" try with smaller value

March 11, 2011, 11:49		#3
Lilly Senior Member Join Date: Feb 2011 Posts: 140 Rep Power: 15	Thank you! Unfortunately I cannot find this option at "Refinement" (or somewhere else). Maybe it's because I am using an old version (4.0.16). I just can find: Max Cell Size, Max Cell Skew, Max Boundary Cell Skew, Min Boundary Cell Skew, Min Boundary Closeness and Boundary Cell Height at "Tri/Tet-->Refinement". Is there maybe another option or can I change the "growth rate" in a different way? Lilly

March 14, 2011, 05:33		#4
sandeep_tu Member Sandeep Join Date: Apr 2009 Location: Munich, Germany Posts: 30 Rep Power: 17	May be try with command in the Tgrid console 1. just type inter first then you will see all options boundary/ exit mesh/ display/ file/ report/ 2. and then type mesh (enter) tritet (enter) controls (enter) cell-size-function (enter) geometric (enter) and then you will see the default value in square brackets and then type the value what ever you want and enter. thats it the value is changed and do the tritet mesh as normal this is the method in TGrid 3D 5.0.6 cheers