Week 3 Challenge : CFD meshing on Turbocharger

CFD meshing on Turbocharger

Aim: To perform CFD meshing on Turbocharger.

Objectives:

1. To check for the geometrical errors to make appropriate volumes of the given module.
2. To create and assign PIDs .
3. To perform surface mesh with the given target lengths as per PIDs.
4. To perform volumetric mesh for the required volumes.

Given target length:

1. Blade stage-1 = 1 mm
2. Blade stage-2 = 1 mm
3. Impeller = 2 mm
4. Shaft rotor = 1 mm
5. Turbo casing = 5 mm
6. Compressor casing = 5 mm
7. Inlet casing cover = 5 mm

Procedure:

1.Open the given model in ansa.

2.Clear the mixed surfaces.

Delete the pink surface by

choosing universal delete

selecting pink crossedge

selecting PID region

Delete the extended surface by selecting entity

3.Create the missing surfaces.

4.Perform geometry check.

Solving single cons using topo

Solving triple cons:

5.Closing the turbocharger

6.Checking,renaming and assigning new PIDs.

deleting unwanted PIDs

7.Surface meshing:

Use different target length for different component.

1. Blade stage-1 = 1 mm
2. Blade stage-2 = 1 mm
3. Impeller = 2 mm
4. Shaft rotor = 1 mm
5. Turbo casing = 5 mm
6. Compressor casing = 5 mm
7. Inlet casing cover = 5 mm

FOR target length 5mm

min length:3 mm

max length:7 mm

FOR target length 2mm

min length:1 mm

max length:3 mm

FOR target length 1mm

min length:.5 mm

max length:2 mm

Mesh property,quality criteria should be given accordingly.

Length permimeter and macro should be given accordingly.

8.Volumetric meshing:

• Volume
• Define
• Autodetect
• List

• Delete thickness volume
• 
• Remesh with tetra CFD

• Volumetric mesh done.

Ansa model link:

https://drive.google.com/file/d/1YYgiKTGjF_gcjadRO1QWySj24bFpUQHe/view?usp=share_link

Learning outcome:

• topo cleanup
• geometry check
• surface mesh
• creating PIDs
• volumetric mesh

Result:

Surface meshing trias 915966 and volumetric meshing tetras 10118038

Conclusion:CFD meshing of turbocharger has performed successfully.