Project 1 : CFD Meshing for Tesla Cyber Truck

Project 1: CFD Meshing for Tesla Cyber Truck

Aim: To check and solve all geometrical errors and Assign appropriate PIDs. Perform meshing with the suitable Target length and element Quality criteria.

Procedure:

1. Since the 3D model of the Tesla Cyber Truck is symmetry, half part of the geometry is deleted to avoid extra time in geometry cleanup and also mesh time.

2. Surfaces are cleaned up with the elimination of single and Double cons using operations like Project, Paste and Release under CONS commands and Intersect, and Extend under Faces Commands.

After clearing all Single and double Cons, Topo is executed. Geometry Check is executed to check the quality of geometry.

3. Car body and wheels are moved to PIDs under the Property manager. The compress tool is used to remove all unused layers in Property Manager.

4. Measuring the smallest length between the hot points for specifying the Target length for mesh.

5. Under Mesh Mode, For Car Body the Target length of 3mm and Min/Max length under quality criteria as below.

6. Since the lowest measured length of wheels are also close to 3 mm, the same mesh criteria are maintained for wheels as well.

7. Mesh is generated with the below steps.

Perimeters --> Length --> Perimeters/macro target length as 3 mm --> o

Mesh --> Mesh Generation --> Spot mesh --> Visible.

8. Using the Transform command, the meshed half is mirrored to another side.

9. Paste command under Topo is used to patch Cons in symmetry.

Quality check is carried out to see if there are no off-surface elements or single Cons. Below images shows the quality of Mesh.

After Mesh, the Car model is ready for the wind tunnel experiment.

10. Wind Tunnel is created for the car model with the details below.

The ANSA model is in the below location.

https://1drv.ms/u/s!AgT2OidYkkemgoUZXZSrdCL3poOArw?e=5Voksu

Learning Outcome:

1. Geometry Clean up tools under Topo Mode.

2. Mesh perimeter setup and Quality criteria.

3. Wind Tunnel specifications for any CAD models.

4. PIDs property manager.

Overall, The model is carried out with multiple operations to clear the specified quality criteria.

Conclusion:

For the given Car model, Mesh is generated and ready for CFD analysis.