Week 5 Challenge : Surface wrap on Automotive Assembly

Aim: To Surface wrap on Automotive Assembly.

Objective

• Check for the geometrical error of the model.
• To delete a surface which is unwanted for surface wrap.
• After cleaning geometry, Merge all 3 models and perform surface wrap.
• The target length for surface wrap is 3mm.

Given Data

1. Engine Model
2. Gearbox Model
3. Transmission Model
4. Target Length is 3 mm for surface wrap.

Models which are given.

• Engine
  
  
  
• Gear Box
  
  
  
• Transmission
  

Procedure

1. Firstly we are going to deal with the engine part and we are performing the clean up of the model. We will delete all the unwanted parts which are not connected with each other.
2. Secondly we will perform the same thing with GearBox and Transmission the unwanted parts to be deleted.
3. While cleaning the geometry we did not worry inside geometry which has single and triple cons, because we have to perform a surface mess outside the surface of the model.
4. After completing the geometry, clean up the surface. We have to merge all the tree surfaces in a single GUI.
5. To merge the transmission and gearbox we had to use the merge option present in the file menu.
   Select the merge option then it will back to select the file which to merge. The merge option will automatically detect the part and will merge with each other.
6. After merging the Engine, Transmission, Gearbox we have to fill all the bigger holes which are present in the geometry.
7. Now we can go to the surface wrap for the model.
   Select the classic mesh option < element< wrap< constant length< double click< give the name< set a target length of 3mm< compress the unnecessary PIDs< stlect al PIDs which are present now< now give the run command.
8. After giving the ri=un command it will take some time to process. After that we can see the surface wrap on the model.
9. By cutting the front and back end we can check that the model is completely hollow from inside. we can see completely from one end to another.

Result

• Engine Clean up
  
  
  
• Transmission
  
  
  
• Gearbox
  
  
  
• Merge of all three parts
  
  
  
• PID mode
  
  
  
• Constant Wrap Octree
  
  
  
  
  
  
  
• Surface Wrap
  
  
  

Learning outcome

• Geometry cleanup
• Geometry merging
• Geometry wrapping

Conclusion

• Surface wrapping done successfully on the given parts.
• Surface wrap is effective for outside flow simulation where the volume between the windtunnel is required for flow over the body.
• The effective surface area range is achieved for a specific body with a specific mesh length of 3 mm.