|February 14, 2009, 14:57||
Numerical error in tetrahedral cells
I have read some quotes on meshing schemes and corressponding problems and accuracy.
However, I have observed in my studies that for pure tetrahedral meshes, there exists a threshold beyond which the solution will be further away from the analytical value than the previous or coarser mesh.
1. Do you think that is possible?
2. do you think that this happens due to the fact that numerical error for tetrahedral cells increases exponentially leading to a condition that any further discretization will only take you away from the analytical solution? (in other words the numerical error due to the tetrahedral cells is much higher than the improvement in the solution due to further discretization in the form more tet cells)
Kindly reply and thank you for yout time and thoughts.
Best regards Sam
|Thread||Thread Starter||Forum||Replies||Last Post|
|Import netgen mesh to OpenFOAM||hsieh||Open Source Meshers: Gmsh, Netgen, CGNS, ...||32||September 13, 2011 05:50|
|snappyHexMesh won't work - zeros everywhere!||sc298||OpenFOAM Native Meshers: snappyHexMesh and Others||2||March 27, 2011 21:11|
|snappyHexMesh aborting||Tobi||OpenFOAM Native Meshers: snappyHexMesh and Others||0||November 10, 2010 04:23|
|Numerical error in tetrahedral cells||Sam||Main CFD Forum||1||February 17, 2009 18:18|
|physical boundary error!!||kris||CD-adapco||2||August 3, 2005 00:32|