|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: 8
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?
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