Fluent Meshing strange mesh

- January 8, 2019 at 11:35 am
  
  sianov
  Subscriber
  
  Hi
  
  I have a problem with mesh. I'm using Fluent Meshing to generate mesh of FS vehicle. I use poly-hexcore mesh. When I set 0,1mm thickness of first prism layer then mesh is good, but when I set 0,012 mm then it is very bad mesh. I include screenshot of mesh. Poly elements look like they are split in few elements. Has anyone idea how to solve it?
- January 8, 2019 at 11:50 am
  
  Keyur Kanade
  Ansys Employee
  
  can you please insert images? we as ansys employee can not download attachments.
- January 8, 2019 at 11:59 am
  
  sianov
  Subscriber
  
  Mesh with 0,012mm first prism
- January 8, 2019 at 12:03 pm
  
  Keyur Kanade
  Ansys Employee
  
  yes, this is done to keep good orthogonal quality.
  
  when there are such curvatures with very small first prism layer height, the cells are splitted to avoid bad quality of cells.
  
  there was a old command
  
  (tgsetvar! 'poly/split-thin-poly-prism-cell? #f)
  
  check if this works for you.
  
  use this command before generating prisms.
  
  if this helps you, please mark this post as 'is solution' to help others on forum.
- January 8, 2019 at 12:04 pm
  
  sianov
  Subscriber
  
  Mesh with 0,1mm first prims.