Dear sir I have become a fond user of gmsh when creating geometries for thermal calculations. I've run in to trouble in these calculations when the temperature gradient is very steep with a mesh that is to coarse. The problem is that I do not need a fine mesh anywhere else but close to the certain boundaries where the temperature gradient is steep. Creating a fine mesh in the whole volume demands to much computational time. Is there a way to separately specify the grid size within different physical groups?
Is there also a way to specify which types of element to be generated? I would like to be able to produce only prisms or hexahedrons. I'm using Gmsh as a mesh generator for SAFIR (a thermal and mechanical FEM-solver for fire exposed structures developed at University of Liege) and it can only understand prisms and hexahedrons in the 3-D case. Best regards Joakim Sandström PhD student at Luleå University of Technology
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