Week 4 Challenge : CFD Meshing for BMW car

Aim: CFD Meshing For BMW Car.

Objective: To learn topology, geometry clean-up, meshing for BMW car. Also Perform meshing with the given Target length and elements Quality criteria. After meshing the half model, Do symmetry to the other side.

1. Target lengths for the different parts of a model are as follow:
2. Body - 3 mm
3. Lights - 4 mm
4. Grills - 1 mm
5. Rims and Tyres - 2 mm
6. Optical Rear view mirror - 2 mm
7. Window - 2 mm
8. Silencer - 3 mm
9. Logo - 1 mm

Procedure:

• Open Ansa Software and load given geometry

• Wireframe mode of model to check the cons and errors

• Check surface fine ness and symmetry of the model

• Makes surfaces and geometry smooth by using classic.

• Deleting half body excluding Car logo

• Checking geometry

• Geometry errors

• Penetration errors

Lets starts doing geometry cleanup one by one

• Front Grills

Before cleanup

After cleanup

Before cleanup

After cleanup

Before cleanup

After cleanup

• BMW logo

Before cleanup

BMW logo after geometry cleanup

• Optical Mirror

Before geometry cleanup

After geometry cleanup

• Tyre before geometry cleanup

After geometry cleanup

• Final Model

Lets start mesh by given different target lengths

• Grills and Logo(1mm)

• Rims and Tyres,Optical Rear view mirror and Window (2 mm)

• Body and silencer(3mm)

• Lights(4mm)

• Final Meshing of car

Results:

Conclusion:

Hence we have check and solve all geometrical errors on half portion and Assign appropriate PIDs. Perform meshing with the given Target length and element Quality criteria. After meshing the half model, Do symmetry to the other side.

Google drive link:

https://drive.google.com/file/d/1qnmgyYDSQgRsBvQYmGUc-bkJJSMFTKDs/view?usp=share_link