Week 3 Challenge : CFD meshing on Turbocharger
Objective: Volumetric meshing on Turbocharger.
Steps / Procedure:
a) First step is TOPO clean up. By looking in model glitchings are found in model that means there are overlap surfaces are present (Triple cons). Also we can check the geometry and can find errors present in models and resolve all errors one by one.
b) Next step is removing/ solving surface errors. (TOPO clean up)
We deleting the overlap surfaces.
In this step we found the new senario i.e the two srfaces are inersected each other but not found the triple cons.
So we have to solve this error by using INTERSECT command.
After use of intersect command we can able to delete extra faces. And can eliminate the error.
C) After Topo clean up we go for the PID assign.
For meshing, the model should be closed, so we checking all PID one by one wether they are correct or not.
All the surfaces are closed to define the volume of model so we can deploy volumetric meshing.
d) After closing the surfaces we are going for assigning PID.
e) Next step is Volumetric Meshing of turbocharger, but before volumetric meshing we must do the surface meshing by using given criteria/ mesh length.
1) Turbo casing:- Mesh length 5mm
2) Compressor casing:- Mesh length 5mm
3)Inlet casing cover:- Mesh length 5mm
4) Blade stage-1:- Mesh length 1mm
5) Blade stage-2:- Mesh length 1mm
6) Shaft rotor:- Mesh length 1mm
7) Impeller:- Mesh length 2mm
Surface Meshing is done
f) The next step is volumetric meshing:
In this step we first define the volumes.
after that we delete the volume occupied by the thickness.
we consider only volume which is occupied by fluid only.
Conclusion:- We can do volumetric mesh of turbocharger by using ANSA.
Before volumetric meshing surface meshing must be done first.
Study of different TOPO clean up such as projecting cons, projecting hot points, etc.
Following is the google drive link for volumetric meshed Turbocharger model:
https://drive.google.com/file/d/1oAfEVSf6vagdDjAyFw0f9LH715USMXEl/view?usp=sharing