Description

Pointwise generates structured, unstructured and hybrid grids. The element types it makes include triangles, quadrilaterals, tetrahedra, pyramids, prisms and hexahedra. Pointwise divides the overall region to be gridded into one or more sub-regions called blocks.

Pointwise can be used to generate both 2D and 3D blocks. A 2D block consists entirely of surface cells while a 3D block contains entirely volumetric cells. All blocks in the same grid must either be 2D or 3D; you cannot combine blocks of differing dimensionality in the same grid.

The grid in each block can either be structured, unstructured or hybrid. A structured grid consists entirely of quadrilateral (2D) or hexahedral (3D) cells that have been arranged in an ordered IxJxK array. An unstructured grid consists of triangles (2D) or tetrahedral, pyramid and prism cells (3D) having no implicit order. If all blocks contain structured grids, then the overall grid is called structured. When all blocks contain unstructured grids, then the overall grid is called unstructured. If the overall grid consists of both structured and unstructured blocks, the overall grid is called hybrid, a special type of unstructured grid.

 

Tip: When deciding which topology to use for a geometry, there are several factors you have to take into consideration: how much time you have available for the grid generation process, the grid types your solver supports, the accuracy desired in certain areas of your grid, and the desired grid size.

structured Grid
This structured grid was generated using the Glyph scripting language.
Hybrid Grid
This unstructured grid was generated using the T-Rex meshing algorithm.