>5. I really need to do some CFD on this. Does anyone know of a good >grid/mesh generation software package that is low-cost and easy to >obtain? I have some CFD code that should do exactly what I need >(AllSPD-3D from NASA Lewis) but generating a grid by hand is more tedium >than I can bear. > If you can get the mesh into something like an Excel spreadsheet then it would not be to hard to convert it to DXF for import.
Meshes are sort of problematic to generate. There was some built in code on the macintoshes as part of Quicdraw-3D. At one time I had a surfacing program from one of the Yahoo groups CAD-CAM special interest group. The main question is are you wanting to make the mesh from a fomula or if it is from surface patches. If the latter I find I prefer the bezier to the cubics. It does take a lot of processin power as there are a lot of mulitiplicatinon operatons. I think this is where the animation studios use custom software. Getting the intiail grid usually requires hardware scanners. I am not sure what CFD is, so I may be totally off base. It could be you just need a trigrid. The main advantage of a surface patch is that it is defined by only a few control points. This allows rendering at high and low resolutions. In reality one has to be more of a sculpter to manupulate something on a mesh that is more akin to digital clay than anything mathematical. Think Adobe illustrator drawing tools. -julie _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
