Hello, We are trying to mesh a geometry which mainly consists of a three dimensional rectangular lattice divided in 14x14x4 (x,y,z)-regions. For this purpose I have used the extrusion-commands to generate a structured mesh of hexahedron-8 elements. At the moment i'm trying to replace the 4 center (in x,y-plane) geometrical volumes by a circular 'beam' (cilinder).
I have added a simplified version (6x6x1) of the model as an attachment. Here prims are generated in the center region, but our fem-solving software can't handle prisms at the moment. Is it possible to generate a mesh for this geometry which only consists of hexes (necessarily unstructured inside the center region), without having to refine the mesh outside of the center area? This is important for the time of computation. (so each side of an element (in the x,y-plane) has a length equal to that of the side of the smalles geometrical entity (8 cm in this case)). So only 8 nodal points (in the x,y-plane) are available at the boundary of the center region. Or is there another nice way to handle this situation and create a conforming mesh? A rough estimate of the cilinder is already satisfactory in my case. Or is the use of prisms the only really usable option? Greetings and I'm curious to hear some good ideas, (I would also like to know how I can prevent the two errors in the creation of the 1D-mesh due to deleting the original elementary entities in the center of the geometry. But this is not the most important problem at the moment.)
ex_3dmodel.geo
Description: ex_3dmodel.geo
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