When a CAD model of a sphere is opened in Autodesk® Simulation CFD, the volume mesh distribution cannot be defined using Automatic Mesh Sizing. The Size Adjustment slider is unavailable when the volume is selected.
There are no edges on the volume of the sphere that the Automatic Mesh Sizing algorithm can use to represent a mesh distribution.
There are several ways to resolve this issue:
- Use Mesh Refinement Regions to assign / adjust the mesh on that sphere
- Switch to Manual Mesh sizing, and manually assign a mesh distribution
- Open the model in the CAD system, and split the volume so that there is an edge around the circumference.
- Modify the CAD model by dividing the sphere into two hemispheres.
Products: Simulation CFD