Discussion Forum

March 17, 2010 8:13am UTC in response to Hattie Liu

Re: what kind of mesh method do i need to choose?

Hi

There are no easy reply, in a general sens, but ONE important feature of the mesh is that it MUST represent correctly the gradients, or deformations of your model. Therefore one often check the mesh density by "refining" once and resolving, just to ensure hat you have less then 5-10% changes in results. To much changes indicte a too coarse mesh, too small changes might indicate a very fine mesh. Now there is no danger in making the mesh too fine, its only that you might hit a RAM limit, or simply it wuld solve very slowly, just as frustrating.

For your case of a hollow cylinder (with or without a closed end) I would use the symmetry, and sketch it in a 2D-axi geoemtry, an then revolve mesh it into a 3D shape (with tri and/or quads) this gives you a regular mesh. You can then compare the results with a 3D free-teth mesh

Good luck
Ivar

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse