Mesh Challenges: Non-drawable Sections and Outer Ring Uniformity

General Discussion
1

Hello, everyone,

In the EDP file I am working with, I am encountering two issues:

  1. Incomplete Mesh: I am unable to build the entire mesh. Specifically, the lower half remains non-drawable. Could someone explain why this is happening? When I set r5 = 20.01, everything seems to work correctly. Is there an alternative solution that doesn’t involve changing the radius?
  2. Non-uniform Mesh in Outer Ring: In the outer ring, the mesh is not uniform. What could be causing this issue, and how can it be resolved?

Thank you for your assistance!
question_for_forum.edp (1.2 KB)

2
  1. question_for_forum.edp (1.3 KB)
    In the modified file, circle5 is replaced by circle5a and circle5b, each of them corresponds to a semicircle.
  2. buildmesh may not create a uniform mesh automatically. In FreeFEM, one workable way I know is to use square together with movemesh. In addition, you can use Gmsh.
1 Like