We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.
Preprocessing

Preprocessing

Topics related to geometry, meshing, and CAD.

Poly-hexcore volume mesh with hexahedral cells upto domain boundaries

    • KarlDD
      Subscriber

      Dear all,

      my task is to simulate the flow around an obstacle in a 3D domain described by a rectangular box.

      boundary conditions: 1x inlet, 1x outlet, 2x symmetry, 2x periodic

      surface of obstacle: no-slip wall

       

      My question w.r.t. Fluent Meshing (Watertight Geometry):
      I want to have a poly-hexcore mesh with polyhedral cells only in the vicinity of the obstacle and hexahedral cells anywhere else upto the domain boundaries.
      However, with poly-hexcore volume mesh settings, I get polyhedral cells at the domain boundaries.

      Is there any way to get hexahedral cells upto the domain boundaries?

      Thanks for your help!

    • Rob
      Forum Moderator

      You will, Fluent Meshing adds poly cells and then switches to hexcore away from the surfaces. 

    • KarlDD
      Subscriber

      So what can I do that Fluent Meshing creates a hexcore mesh directly at domain boundaries (not switching from poly cells to hexcore)?

      I want to have poly cells only around the obstacle, but not at domain boundaries...

    • Rob
      Forum Moderator

      You can't, that's how the poly-hexcore mesher works. Is there a reason for not wanting poly cells at the outer regions? 

    • KarlDD
      Subscriber

      For domain boundaries with periodic boundary condition and remarkable flow over these boundaries, I prefer to have a structured grid - in particular if the shape of the domain (in my case a rectangular box) allows to have hexcore cells upto the domain boundaries...

    • Rob
      Forum Moderator

      You can use Ansys Meshing and decompose the domain, but I generally just use a full poly mesh. 

    • KarlDD
      Subscriber

      Ok, thanks!

Viewing 6 reply threads
  • The topic ‘Poly-hexcore volume mesh with hexahedral cells upto domain boundaries’ is closed to new replies.