Week 3 Challenge : CFD meshing on Turbocharger

• Objective
  • To check geometrical errors to make appropriate volume.
  • To create and assign PID's as shown in video.
  • To perform surface meshing with given target length.
    1. Blade stage-1 =1mm
    2. Blade stage-2 =1mm
    3. Impeller = 2mm
    4. Shaft rotor = 1mm
    5. Turbo casing = 5mm
    6. Compressor casing = 5mm
    7. Inlet casing cover = 5mm
  • To perform volumetric meshing for the required volume.

• Procedure
  

  • Import geometry
    
    
    
    
  • Topo cleanup
    Clear Single Cons
    
    
    
    
    
    
  • Perform geometry checkup
    There are 2 triple cons present.
    
    
    
    
  • Release triple cons
    
    Overlapped surface deleted and triple con also released.
    
    
    
    
    
  • Now we are done with topo cleanup.
  • Now we will Check for the PID's whether surfaces are closed or not? and rename each PID's.
    
    close all the surface openings
    
    
    
    
    Top blade
    
    Middle blades
    
    Shaft
    
    Bottom casing
    
    Bottom feature
    
    Bottom blades
    
    Casing inlet
    
    Outer casing
    
    Casing outlet
    
    Bottom casing inlet
    
    
    Bottom casing outlet
    
    
    edited names of PID's
    
    
    
  • Surface Meshing
    Set quality parameter, mesh parameter and length for each PID as per given data.
    For Compressor casing.
    
    Mesh parameter
    
    
    spot mesh of compressor casing
    
    Inlet casing cover and turbo casing
    Quality parameter
    
    Mesh parameter
    
    Length parameter
    
    Spot mesh
    
    Impeller
    
    
    
    
    Blade stage_1, stage_2 and shaft Roter
    
    
    
    
    
    Overall meshed surfaces
    
    
  • Volumetric mesh
    Volume mesh> Volume>Define>Whole Db.
    
    Detected volume
    
    Now we need to delete unwanted volume
    After deleting unwanted volumes we are left with four volumes.
    
    Generated Volumetric Mesh in cut plane
    
    
    
    Overall volumetric mesh
    
    Learning outcomes
    • I learned about creating a complex face surface by creating new hot points.
    • I learned about solving surface intersection errors.
    • I learned about solving surface mesh errors.
    • I learned about volumetric meshing.
      
      
• Conclusion
  
  • The Number of Total Trias in surface meshing is 91595.
  • The number of Total Tetras in Volumetric meshing is 6826034.

Model link

https://drive.google.com/file/d/1zY7noWuNNC7rval0fYHaUcp9nA_teaVp/view?usp=sharing