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(b) Hex Meshing
w Swept Mesher
w Hex Dominant Mesher

w Thin Solid Mesher
(c) Hex/Prism/Tet Hybrid Meshing
w MultiZone Mesher

(d) Cartesian Meshing
w CutCell algorithm (assembly level)
(e) Quad Meshing

w Quad Dominant
w MultiZone Quad/Tri

(f) Triangle Meshing
w All Triangles

3.2.3 Overview of the Meshing Process for CFD/Fluids Analyses

This section describes the basic process for using the ANSYS Meshing application to create a mesh as
part of an ANSYS Workbench CFD/fluids analysis. Refer to Strategies for CFD/Fluids Meshing in
ANSYS Workbench for information about different CFD/Fluids meshing strategies. Refer to the ANSYS
Workbench help for detailed information about working in ANSYS Workbench. There are four basic
steps to creating a mesh:
Create Geometry: You can create geometry for the Meshing application from scratch in the ANSYS
Design Modeler application, or import it from an external CAD file. The Meshing application requires
you to construct solid bodies (not surface bodies) to define the region for the 3D mesh (for 2D
simulations a sheet body can be used). A separate body must be created for each region of interest in
the fluids simulation; for example, a region in which you want the fluids solver to solve for heat
transfer only must be created as a separate body. Multiple bodies are created in the Design Modeler
application by using the Freeze command; see Freeze in the Design Modeler help for details.
It is best practice to explicitly identify any fluid regions in the model as fluids rather than solids.

For new users or new models it is often useful to first generate a default mesh, evaluate it, and then
apply the controls described in Define Mesh Attributes as appropriate to improve various mesh
characteristics.

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