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[TurboGrid] Turbocharger Compressor Wheel Meshing

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Old   March 20, 2013, 11:27
Default Turbocharger Compressor Wheel Meshing
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This is my first post, I am carrying out an analysis on a turbocharger compressor wheel to compare it with the compressor map given for a specific compressor.

I have created a geometry of the compressor wheel using Blade Gen and have imported it into TurboGrid to create a mesh.

I am assuming constant mass flow rate and I am also assuming no pre-whirl.

I am unsure of a few things:
1: What turbulence model should I be using for the most accurate results?

2: How would I go about improving the mesh quality?

3: I know ambient temperature and pressure and would like to calculate outlet pressure, temperature and velocity. Is this possible?

4: I have not taken into account the diffuser as I do not know how to. How would I go about this as from what I understand, the pressure increase is a result of the diffuser (nozzle), the compressor wheel only pumps to increase the velocity.

5: How do I take into account the rotating compressor wheel as Turbogrid only imports one blade?

If anyone could help it would be greatly appreciated.

Kind regards.
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