|
[Sponsors] |
January 30, 2008, 12:18 |
Problems with Mesh Expansion Factor
|
#1 |
Guest
Posts: n/a
|
When i check my hexa-mesh in ICEM everything seems ok, but when i run the solver i see this in the Mesh Statistics:
Maximum Mesh Expansion Factor = 811.2 ! Whats the equivalent of this in ICEM? Because i can't find anything that has a value that high. Does the mesh expansion factor have any impact on the convergence, since my simlations doesnt converge at all, i was wondering if this was the cause. |
|
January 30, 2008, 16:21 |
Re: Problems with Mesh Expansion Factor
|
#2 |
Guest
Posts: n/a
|
Hi,
How sensitive a simulation is to mesh quality depends on what you are trying to do, but a mesh expansion factor of that magnitude may well cause convergence problems. In CFX-Post calculate the mesh quality parameters and use it to find the poor quality elements. Glenn Horrocks |
|
February 4, 2008, 03:41 |
Re: Problems with Mesh Expansion Factor
|
#3 |
Guest
Posts: n/a
|
The quality variable "Volume Change" in ICEM is the equivalent to the solvers "mesh expansion ratio". Eventough they don't show exactly the same values.
Using volume change in ICEM, one can make sure that the elements volume ratios have adequate quality. |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[ICEM] Generating Mesh for STL Car in Windtunnel Simulation | tommymoose | ANSYS Meshing & Geometry | 48 | April 15, 2013 04:24 |
Problems scaling down the mesh of a stirred tank (GGI, icoDyMFoam) | Tobb | OpenFOAM | 2 | February 7, 2013 13:06 |
[ICEM] Unstructure Meshing Around Imported Plot3D Structured Mesh ICEM | kawamatt2 | ANSYS Meshing & Geometry | 17 | December 20, 2011 11:45 |
Maximum mesh expansion factor | Daniel | CFX | 2 | September 27, 2007 01:47 |
unstructured vs. structured grids | Frank Muldoon | Main CFD Forum | 1 | January 5, 1999 10:09 |