|October 6, 2010, 15:24||
recommended cell expansion ratio
Join Date: Aug 2010
Posts: 11Rep Power: 7
I remember reading somewhere that the recommended cell expansion ratio was between 0.833 and 1.2 from adjacent cells, but I can't seem to find that reference anywhere now. Does anyone know if there is a recommended cell expansion ratio and if there's a good reason for it?
|October 12, 2010, 13:15||
Join Date: Sep 2009
Posts: 54Rep Power: 7
Maybe I found something. If I use high expansion rates, i.e. high cell aspect ratios and run checkMesh -allGeometry -allTopology, I will get an error message because of small determinant of some cells. A cell determinant of 1 relates to a hexahedral cell whereas a small value relates to an illegal flattened cell. As far is I had a look at this problem the error occurs when the cell determinant is smaller than 1e-03. So one can maybe conclude to a maximal aspect ratio?
|Thread||Thread Starter||Forum||Replies||Last Post|
|FvMatrix coefficients||shrina||OpenFOAM Running, Solving & CFD||10||October 3, 2013 14:38|
|Y and Cell Aspect Ratio||gdbaldw||OpenFOAM Running, Solving & CFD||9||February 15, 2012 12:43|
|Cells with t below lower limit||Purushothama||CD-adapco||2||May 31, 2010 21:58|
|Trimmed cell and embedded refinement mesh conversion issues||michele||OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ...||2||July 15, 2005 04:15|
|Warning 097-||AB||CD-adapco||6||November 15, 2004 05:41|