Ansys Meshing - Method
Written by cfd.ninja
The mesh method tells Ansys Meshing which algorithm to use on a body, and it is the first decision of the whole meshing process, before any sizing.
Automatic switches between sweeping and tetrahedra depending on whether the body can be swept. Tetrahedrons fills anything, with Patch Conforming respecting every edge of the geometry and Patch Independent tolerating dirty geometry by working from the volume inward. Sweep extrudes a source face through the body to give hexahedra. MultiZone decomposes the body on its own and meshes the sweepable parts with hexahedra. Hex Dominant fills mostly with hexahedra and closes the rest with other shapes.
Choosing well starts with the geometry, not with the solver: if the body is sweepable you want hexahedra, if it is complex you want tetrahedra with inflation along the walls, and if you are unsure, MultiZone is the usual compromise.
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