Different types of meshes used in CFD

The following types of meshes are used in Computational Fluid Dynamics.

• Triangular mesh: mesh consisting entirely of triangular elements.
• Tetrahedral mesh: mesh with only tetrahedral elements.
•  Hybrid mesh: mesh with one of the following:
•  Triangles and quadrilaterals in 2D
•  Any combination of tetrahedral , prisms, pyramids in 3D
•  Non-conformal mesh: mesh in which grid nodes do not match up along an interface.
•  Hex-core mesh: mesh consisting of tetrahedral /prism elements next to boundaries and a Cartesian hexahedral mesh in the core flow regions