Week 4 Challenge : CFD Meshing for BMW car

CFD Meshing for BMW car

Aim: To do the TOPO and meshing for the BMW car using ANSA

Objective: meshing for the BMW car create a tunnel and do the volumetric meshing for the car.

Procedure:

Step 1:

Open the model in the save d file.

Once our model appears check the geometrical check.

We can not do the TOPO clean up for the whole model for simplification we will make symmetry of the car.

Delete the half part of the car that would be easy to do the TOPO.

Step 2:

Once symmetry done start doing TOPO for the model by PID wise.

Step 3:

After converting all single and triple coons in to double start assigning the PID’S for the model with suitable name for the PID.

Step4:

After giving PID start meshing PID wise with mesh length given below

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

Make sure that my all off elements would be zero.

By reconnecting the mesh.

Step 5:

Before meshing geometry check once if any unmeshed surface and single cons are there are not.

After that set the view top of the model and make the copy by using translate mirror 3point plane.

After copy check whether any single or triple cons present in the model and check with unmeshed surface.

Step 6:

After ok with model start creating the tunnel for the model

By creating the points at the suitable distance.

And connect the point with help of curve new and make plane delete the point.

Once get the base surface do the offset to get the top surface

Similarly create the side and front surfaces by face new option.

Step 7:

Start doing assign the PIDS and mesh the surfaces with suitable mesh length after meshing do the volumetric mesh for the tunnel by the V mesh tool.

below given the link of my ANSA model.

https://drive.google.com/file/d/1jbhhvxJbdwpzUMEM_j_SBD9N48I4y4S5/view?usp=share_link

THANK YOU