Week 3 Challenge : CFD meshing on Turbocharger

Aim:
For the given model of a turbocharger, check for the geometrical errors to make appropriate volumes. Create and assign PIDs
accordingly. Create surface mesh and use that to create a volumetric mesh.

Objective:

1. Perform surface mesh with the given target lengths as per PIDs.
a. Blade stage-1 = 1 mm
b. Blade stage-2 = 1 mm
c. Impeller = 2 mm
d. Shaft rotor = 1 mm
e. Turbo casing = 5 mm
f. Compressor casing = 5 mm
g. Inlet casing cover = 5 mm

2. Perform Volumetric mesh for the required volumes as shown in the videos.
3. Write a detailed report on your surface meshing & Volume meshing process.

Topo/ geometry clean-up:
a. Upload the ANSA file using the open option under the file drop down.
b. Start with the topo clean by doing a geometry check to find single and triple cons in the geometry. select topo under faces and box
select the entire model so that any missing cons can be detected and the geometry clean up can be done more accurately.
c. Delete the unnecessary overlapping surfaces by using the universal delete option.
d. Start with filling the surface and clearing the single cons by creating the surface where ever required.
e. Use intersect option to delete the surface which has no separate entity, therefore a separate entity is formed when using intersect and can be deleted easily.

after doing operations using tools in Topo

1. Compressor casing = 5 mm

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

1. Impeller = 2 mm

1. Turbo casing = 5 mm

Conclusions:
1. Achieved volumetric mesh of the turbocharger model.
2. Different mesh length sizes tend to give errors at the contact regions of 2 different mesh length regions, therefore mesh ranges can
be given to avoid erasing of mesh.
3. Volumetric mesh can be achieved only after creating surface mesh successfully, or else the geometry can give fatal errors while
volume meshing.
4. Overlapped surfaces can be deleted using the universal delete option.

https://drive.google.com/file/d/18lt9kfZtRT-gK6VBO_fBqlpY645ueGpI/view?usp=sharing