Week 3 Challenge : CFD meshing on Turbocharger

Aim :- To perform Topo clean up, generate the missing surface ,surface mesh and volume to the turbo charger by using the ansa.

Objective: Generate mesh for below mesh target.

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:-

Import the model .Change the geometry from ENT mode to PID mode.To check the over lap surface for the model and delete the unwanted surface. After selecting delete option .Select PID of cross hatch, Then click the middle button of mouse .It will delete surface.

Applying the intersection option for removing the unwanted surface.

Topo-intersect-select first surface-then second surface-click the middle button in mouse .

intersection will created.

Generated the missing geomentry to the surface.

1. Faces -New -cons -select the cons -click middle botton -it will show the alternate surface ,select the appropriate  surface.-then click ok.
2. cons -fill holes -select the cons -click middle botton -it will show the alternate surface ,select the appropriate  surface.-then click ok.

checking the geometry errors.

checks - geometry - excute -it will show errors.check one byone, clear all.

Closing the all inlet ,oulets &holes for geometry for meshing the surface and volume.

given the all the PIDS to component

Applying the mesh parametrs to the geometry.

1. Turbo casing = 5 mm
2. Compressor casing = 5 mm
3. Inlet casing cover = 5 mm

1. Blade stage-1 = 1 mm
2. Blade stage-2 = 1 mm
3. Impeller = 2 mm
4. Shaft rotor = 1 mm

Surface meshing completed.

volume meteric mesh-

volumes-define-whole db-ok.

it will display the default mesh generated for body.

deleteing the unwanted volumes:

Remaining the 4 volumes for mesh.

changing the volume to tetra CFD.

.

Cross section of  volumetric mesh .

conclusion :

1.Checking for geometry errors and correcting the geometry using geomentry checks, elemenating the  single cons & triple cons . Deleting overlapping regions .

2. Creating surface mesh individually and  maintaining different mesh lengths .

3. Identifying and creating volume mesh for the fluid region & deleting the unwanted volumes  . Remeshing the volume to tretra cfd.

from this challenge  the Topo clean up, meshing the surface , creating the volume to the geometry are learnt.