CFD MESHING OF A BMW CAR

AIM:

To deploy the volumetric mesh for the car model along with surface mesh for the Wind Tunnel which includes solving TOPO errors and overlapping and assigning PID with different selection techniques using ANSA V22.

OBJECTIVE:

To perform the volumetric meshing on the BMW car, by solving Topo errors for one half of the model and surface meshing with different mesh target length and symmetry the same to get the full model.

PROCEDURE:

1.Importing the file.

2.GEOMETRY INSPECTION:

3.DELETING THE UNNECESSARY SURFACES:

4.DELETING THE OVERLAP SURFACES (LIGHT):

4a.JOINING THE SINGLE CONS:

5.PERFORMING TOPO CLEANUP AT GRILL 1:

5a.DELETING THE UNNECESSARY SURFACES:

6.AFTER TOPO CLEANUP AT GRILL 1:

7.PERFORM TOPO CLEANUP AT GRILL 2:

7a. DELETING THE PROBLEMATIC SURFACES:

7b.CREATING THE NEW SURFACES:

7c.DELETING THE COMPLICATED SURFACES:

8.CREATING NEW SURFACES AT GRILL 2:

9.PERFORM TOPO CLEANUP AT LOGO:

9a.DELETING THE UNNECESSARY SURFACES:

10.CREATING NEW SURFACES AT LOGO:

11.PERFORM TOPO CLEANUP AT FRONT WINDSHIELD:

12.PERFORM TOPO CLEANUP AT REAR WINDSHIELD:

13.PERFORM TOPO CLEANUP AT THE PROBLEMATIC SURFACES:

13a.TOPO CLEANUP AT DOOR HANDLE:

14.PERFORM TOPO CLEANUP AT GRILL 3:

14a.DELETING THE UNNECESSARY SURFACES:

15.CREATING THE NEW SURFACES:

16.PERFORM TOPO CLEANUP AT DOOR HANDLE:

17.CREATING NEW SURFACES:

18.PERFORMING TOPO CLEANUP AT MIRROR:

19.PERFORM TOPO CLEANUP AT WHEELS:

20.CREATING THE NEW SURFACES:

21.PERFORM TOPO CLEANUP AT THE BASE SURFACES (BODY):

22.PERFORM FINAL GEOMETRY CHECKS:

23.ASSIGNING PID:

24.FORCE DELETING THE UNWANTED PID:

25.FINAL ASSIGNED PID'S:

26.DIMENSION INSPECTION:

27.MESH GENERATION AT LOGO:

28.MESH GENERATION AT GRILLS:

29.MESH GENERATION AT WINDOWS:

30.MESH GENERATION AT LIGHTS:

31.MESH GENERATION AT SILENCER:

32.MESH GENERATION AT WHEELS:

33.MESH GENERATION AT MIRROR:

34.MESH GENERATION AT BODY:

35.PERFORM SYMMETRY OPERATIONS:

35a. DEFINE THE SYMMETRY PLANE:

36.aFTER PERFORMING SYMMETRY OPERATION:

37.SOLVING THE SINGLE CONS:

38.PERFORMING FNAL GEOMETY CHECKS:

LEARNING OUTCOME:

I learnt to create the Volumetric mesh for BMW car which includes Advanced Topo cleanup of the geometry which has overlapping surfaces along with assigning different Target length's 1mm,2mm,3mm,4mm for different surfaces. Similarly, identifying the errors in the model using geometry checks and identifying the overlap surfaces. Eliminating the unnecessary volumes and prepared to perform Tetra CFD meshing for the Required Volumes.

RESULT:

Volumetric Meshing for the BMW car model is carried out with Tria Mesh having different mesh lengths for different volumes.

CONCLUSON:

The main theme of this challenge is to deploy the surface Mesh for different PID provided the Tria mesh having 1448202 elements which can be promoted to fluid simulations after processing Volumetric mesh

https://drive.google.com/file/d/13a5Ys-3E4d1rZfnN1M8QVVpA0X_WN34z/view?usp=share_link