Hybrid Meshing Improved in Gridgen

By DE Editors

The new release of Gridgen's hybrid meshing capability is up to 7x faster and generates 40 percent fewer cells.

Pointwise (Fort Worth, TX) announced the latest release of their Gridgen software featuring improved performance for the anisotropic tetrahedral extrusion technique for highly automated, high-quality, hybrid mesh generation for CFD.

Anisotropic tetrahedral extrusion generates a mesh characterized by layers of high quality, high aspect ratio tetrahedra in the near-wall region for boundary layer resolution and an isotropic mesh in the farfield. By optimizing the anisotropic-isotropic blending algorithm and triangle-triangle intersections used for collision detection, the overall mesh generation time was reduced by up to a factor of 7.2. At the same time, a new algorithm for combining tetrahedra into prisms reduces a mesh's overall cell count by up to 41% over previous releases.

The new release of Gridgen, Version 15.13, improves the robustness of the anisotropic surface mesher and the isotropic tet mesher. Furthermore, the cell count reduction method represents a joint Gridgen-Pointwise solution in which the new algorithm for recovering one prism from three tetrahedra is performed in the new Pointwise meshing software using data from Gridgen's native file.

More information about Gridgen and Pointwise is available from Pointwise.

For previous DE coverage, see “Pointwise Offers Advanced Hybrid Meshing for CFD in Gridgen,” (Aug. 2008).

Sources: Press materials received from the company and additional information gleaned from the company's website.