I need some help with this mesh. I want to make sure that the internal part of the circle is not filled by the triangles of the mesh. How can I modify the code below to achieve this?

I created this .msh file manually. So far I struggled to get GMSH to output the hexahedron mesh I need. So far the end result is that GMSH viewer can’t read the nodes as it states in it’s status bar.

import gmsh import csv def write_faces(element_types, element_tags, element_node_tags): # Write faces to CSV with open(‘beam_faces.csv’, ‘w’, newline=”) as csvfile: writer = csv.writer(csvfile) for i, elem_node_tags_current in enumerate(element_node_tags): for j in range(0, len(elem_node_tags_current), 8): # 8 nodes per hexahedron face = elem_node_tags_current[j:j+8] writer.writerow(face) def write_nodes(node_tags, node_coords, _): # Write nodes to CSV with open(‘beam_nodes.csv’, ‘w’, newline=”) […]

My mesh is a simple square with a circle hole and I want to learn how to have a size field that increases my mesh size around the circle hole created. This the geo file to be implemented on gmsh for creating a mesh withou the size function :

Trying to create a 3D solid mesh structure which has a solid particle inside it. I want the box and the sphere both have non-overlapped mesh structure. But the BOX’s mesh is also going inside the sphere’s mesh. Trying to delete the volume of sphere from the box, and then generating 3D mesh for both. But its not working? Any suggestions?

I have this geometry that I insert as a step file. The problem is that GMSH does not add the same amount of elements on the cylinders of the picture, the one has 134 nodes and the other 140. How can I make the number of nodes equal?