How to Generate Surface Mesh in Ansys Fluent Meshing — Lesson 3

Surface meshes are critical in not only capturing the geometrical features of the CAD as accurately as possible, but also in laying the foundation for generating high-quality volume meshes that are required for CFD analysis. The Generate the Surface Mesh task, which is the focus of this lesson, lets the user create high-quality meshes when using the Ansys Fluent Meshing Watertight Geometry workflow.

In this lesson, we will discuss global sizing parameters such as minimum size, maximum size, and growth rate, which should be appropriately set to build good-quality surface meshes. We will also briefly explore various size functions such as Curvature, Proximity, and Curvature & Proximity. Further, we will learn the distinction between local sizing and global sizing options and understand how the surface mesh and volume mesh change with respect to each option by comparing two different cases.

In addition to understanding how to generate surface mesh, we will also discuss the importance of a good-quality mesh. A good-quality surface mesh has a direct influence on the stability and quality of the results obtained from a CFD simulation. We will understand how to evaluate surface mesh quality and identify ways to improve the surface mesh quality, i.e., either by using the Improve the Surface Mesh task or by adding local sizing wherever needed.

Alternate video link.

Simulation Files   

Download the files here to follow the video step-by-step. Ansys Student can be downloaded for free here.