|
[Sponsors] |
January 22, 2003, 09:12 |
Face handedness
|
#1 |
Guest
Posts: n/a
|
Hi, does anyone know how to correct a "face-handedness" grid error? This jumps out at me when I do a grid check on my latest grid (took me hours to make it, darn!), and I cannot imagine having remesh the whole thing again! :P
|
|
January 22, 2003, 09:48 |
Re: Face handedness
|
#2 |
Guest
Posts: n/a
|
Hi Chris,
try /grid/modify-zones/repair-face-handedness, s.t. it helps. If your case is 2D and axissymmetric, the error can occur due to cells lying below the x-axis. If possible, translating in the right direction helps. |
|
January 24, 2003, 08:06 |
Re: Face handedness
|
#3 |
Guest
Posts: n/a
|
I tried your advice, and though it corrected the face-handedness, it generated a non-positive volume
I'm doing a 3-D model, by the way. Maybe I'll try to remesh the thing, and see how things go...but if you have any more advice, please help! Thanks Volker. |
|
January 24, 2003, 09:14 |
Re: Face handedness
|
#4 |
Guest
Posts: n/a
|
Non-positive volumes after the handedness-repair process often indicate very bad cells. What is your highest skewness?
Sometimes the face-handedness problems occurs when you work with hybrid meshes in cases were the pyramids grow into the wrong direction or at sharp geometry angles with a too low grid resolution. Try to check where the bad cells with the negative volume are located and remesh this part if possible. Let me hear what the reason was. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[Netgen] Import netgen mesh to OpenFOAM | hsieh | OpenFOAM Meshing & Mesh Conversion | 32 | September 13, 2011 05:50 |
[blockMesh] BlockMeshmergePatchPairs | hjasak | OpenFOAM Meshing & Mesh Conversion | 11 | August 15, 2008 07:36 |
fluent add additional zones for the mesh file | SSL | FLUENT | 2 | January 26, 2008 11:55 |
[blockMesh] Axisymmetrical mesh | Rasmus Gjesing (Gjesing) | OpenFOAM Meshing & Mesh Conversion | 10 | April 2, 2007 14:00 |
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues | michele | OpenFOAM Meshing & Mesh Conversion | 2 | July 15, 2005 04:15 |