All things being equal, CFD practitioners prefer to use hexahedral mesh cells in the boundary layer for the improved robustness and accuracy they bring to the flow solver. Traditionally, a hex grid would be created using a structured grid technique (aka mapped mesh) but these can require too much manual intervention to generate efficiently. Unstructured quad and hex meshing techniques provide the best of both worlds: unstructured flexibility and speed, and hex cell quality.
In this on-demand webinar, we highlight four features available in Pointwise.
- unstructured quad meshing of the geometry model
- automated outer boundary creation
- unstructured, near-wall hex layer generation
- cell clustering inside the volume mesh using sources
Starting with a geometry model of an aircraft, you’ll see the entire meshing process beginning with the generation of a quad-dominant surface mesh that is clustered to regions of high surface curvature. Farfield boundaries are generated using automated shape creation utilities. The same shape creation utilities are then used to define a source that provides off-body volumetric grid refinement to help track flow features of interest. The volume mesh is generated using T-Rex, our unstructured viscous meshing algorithm, which extrudes stacks of hexahedra and prisms that smoothly transition to an isotropic tetrahedral farfield. Lastly, several mesh quality metrics are examined.
Discover how to:
- Automatically create unstructured quad-dominant surface meshes
- Extrude flow-aligned, hex-dominant boundary layer resolved cells using T-Rex
- Easily generate shapes to define farfield boundaries and sources
- Define off-body volumetric refinement regions using sources
You can enjoy this webinar at the time of your choosing but why not take a look right now.
Pingback: Resolving Boundary Layers with Unstructured Quad and Hex Meshing: On-Demand Webinar - Computational Fluid Dynamics - Cadence Blogs - Cadence Community