Mesh Generation using Ansys Fluent Meshing — Lesson 2

CFD simulation is an important tool used in the design and optimization of FSAE cars. To achieve accurate CFD simulation results, a high-quality, error-free mesh needs to be generated. Meshing is the process in which the computational domain is divided into small sub-volumes or cells. Within these cells, equations of fluid dynamics are solved to obtain the behavior of a fluid as it flows around an object. Since we have a complex geometry, special care needs to be taken to refine the mesh at specific locations. In this lesson, using the Ansys Fluent Meshing watertight geometry workflow, we will learn how to create a CFD simulation-suitable mesh for the FSAE car. In the workflow, after importing the CAD geometry, we will learn how to create local refinement regions to accurately capture the flow features. Next, we will see how to add local sizing to cover the complex curvatures in the geometry. We will also understand how to create boundary layers, which play a significant role in capturing flow features near the walls of the car geometry. Finally, we will learn how to create a good quality volume mesh, improve the volume mesh, check the mesh for any warnings or errors, and learn about some common warnings and resolve them. Along the way, we will cover some general aspects of creating good quality meshes and discuss the logic behind certain meshing decisions.

Simulation Files

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Alternate video link.