Hello,
Step1: I have been experimenting with mmg2d and want to create an anisotropic surface mesh where the elements of the coarse initial Gmsh mesh are modified to become anisotropic with an approximate aspect ratio x:y of e.g. 1:3. This mesh would then be the basis to create an anisotropic prismatic boundary layer mesh using Gmsh extrusion.
So far I have not been able to create a mesh consisting of modified cells that have an aspect ratio. How can I achieve that? What are the related functions? - I keep creating in y-direction refined meshes.
Background / ultimate goal: Step 2: If the above works I’d like to link the anisotropic mesh elements aspect ratio to the curvature and flow direction of the envisioned OpenFOAM flow simulation. The driving objective is to create a mesh with the minimal cell count that conforms with the shape of the object to be studied. I expect a cell count reduction of up to 2/3 compared to a “refined” mesh usually used to reach the surface shape conformity.
BR,
Klaus