Meshing Methods: Hexahedral
ANSYS Meshing technology provides multiple methods to generate a pure hex or hex-dominant mesh. Depending on the model complexity, desired mesh quality and type, and the time available to perform meshing, ANSYS Meshing provides a scalable solution. Quick automatic hex or hex-dominant mesh can be generated, or a highly controlled hex mesh for optimal solution efficiency and accuracy.
Hex mesh of brake assembly using combination of hex meshing methods including sweep, thin sweep, MultiZone and hex-dominant
Automated hex meshing using MultiZone mesh method that automatically decomposes geometry to create all-hex or hex-dominant mesh
Mesh Methods
- Cut cell Cartesian meshing
- This mesh method generates a high percentage of hexahedral cells in a Cartesian layout in the far field, to deliver accurate fluid flow results.
- Local to the surface, mixed element types are used that allow the mesh to conform to sharp features.
- The surface cells can be inflated to generate hexahedral and prismatic layers to capture near-wall physics effects.
- Rapid mesh generation of hexahedral cells with minimal user setup make this mesh method ideal for complex geometry for computational fluid dynamics (CFD) simulation.
- Automated sweep meshing
- Sweepable bodies are automatically detected and meshed with hex mesh when possible..
- Edge increment assignment and side matching/mapping are done automatically.
- Sweep paths are found automatically for all regions/bodies in a multibody part.
- Defined inflation is swept through connected swept bodies.
- Sizing controls and mapped controls can be added, and source faces selected to modify and take control of the automated sweeping.
- Adding/modifying geometry slices/decomposition to the model greatly aids in the automation to obtain a pure hex mesh.
- Thin solid sweep meshing
- This mesh method quickly generates a hex mesh for thin solid parts that have multiple faces as source and target.
- This method can be used in conjunction with other mesh methods.
- Sizing controls and mapped controls can be added, and source faces selected to modify and take control of the automated sweeping.
- MultiZone sweep meshing
- This advanced sweeping approach uses automated topology decomposition behind the scenes to attempt to automatically create a pure hex or mostly hex mesh on complicated geometries.
- Decomposed topology is meshed with a mapped mesh or a swept mesh if possible. The option to allow for free mesh in sub-topologies that can’t be mapped or swept is available.
- This method supports multiple source/target selection.
- Defined inflation is swept through connected swept bodies.
- Sizing controls and mapped controls can be added, and source faces selected to modify and take control of the automated sweeping.
- Hex-dominant meshing
- This mesh method uses an unstructured meshing approach to generate a quad-dominant surface mesh and then fill it with a hex-dominant mesh.
- This approach generally gives nice hex elements on the boundary of a chunky part with a hybrid hex, prism, pyramid, tet-mesh used internally.
