Challenge

Week 3 Challenge : CFD meshing on Turbocharger

CFD Meshing on Turbocharge

Aim:

To create a surface mesh and volumetric mesh on a given turbocharger using ANSA.

Objective:-

To perform a topology clean-up and create a surface and volumetric mesh for the turbocharger with the target length of

  • Blade Stage 1 - 1 mm
  • Blade Stage 2 - 1 mm
  • Impeller - 2 mm
  • Shaft Rotor - 1 mm
  • Turbo Casing - 5 mm
  • Compressor Casing - 5 mm
  • Inlet Casing Cover - 5 mm
Procedure:-

1) Importing the given CAD Model of the turbocharger.

2) Topology Cleanup

  • A given geometry has been prepared by removing single cons, triple cons, and missing surfaces of the turbocharger.

3) Creating PID of a Turbocharger

  • Property ID has been created for the turbocharger components.

4) Surface Meshing

  • Meshing the turbocharger with the given mesh length using the spot mesh.
  • Define the length of perimeters and macros.
  • Change the quality criteria and mesh parameters to min and max mesh length type as tria elements.
  • Generate the surface mesh using the spot mesh by selecting the region.

5) Volume Meshing

  • Define volume using the whole db option in the volume mesh deck for auto-detect volumes after creating a surface mesh.
  • Keep the fluid volume of the turbocharger and delete the geometry that has a thickness or parent geometry.
  • Change the mesh type to Tetra CFD and remesh the volume.

Learning Outcomes:-
  • Isolating the surface using Or, And, Not, !Not, Invert, and neighbour options.
  • Creating hot points using Insert, Project, Multi-Project, and Parametrical.
  • Creating a new surface using existing surface, COONS, Fitted, and Fill Hole options.
  • Remove the smaller edge using the surface cut option.
  • Set new PID for the turbocharger components in the property manager tool.
  • Extracting the fluid volume of the turbocharger.
Result:-

The surface mesh and volumetric mesh have been created for the given mesh length parameters of the turbocharger.

  • Surface mesh - 802394 (trias)
  • Volume mesh - 6824969 (tetras)

Volume Meshing File Link : CFD Meshing on Turbocharger

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