Turbocharger: Mass flow rate and pressure ratio

AI Thread Summary
The discussion focuses on calculating the relationship between pressure ratio and mass flow rate in a vehicle turbocharger's compression system. The user initially questions the applicability of Stodola's cone law for compressors, noting its relevance for turbines. They confirm that they have determined a method to calculate mass flow based on the pressure ratio. The conversation highlights the importance of understanding these parameters for effective turbocharger design. Ultimately, the user successfully finds a solution to their initial query.
Carlko26
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Hello everyone,

i am currently dimensioning a compression system using a vehicle turbocharger and need to find a way to relate the pressure ratio of the compressor and the mass flow rate. (flows trough compressor and turbine are of course separated)

For the turbine, one can use Stodola's cone law (or ellipse Law) but i don't believe that it is valid or applicable for compressors. Am i wrong?

The inlet conditions and the pressure ratio are known.

Any ideas?

Greetings,

Charles
 
Carlko26 said:
Hello everyone,

i am currently dimensioning a compression system using a vehicle turbocharger and need to find a way to relate the pressure ratio of the compressor and the mass flow rate. (flows trough compressor and turbine are of course separated)

For the turbine, one can use Stodola's cone law (or ellipse Law) but i don't believe that it is valid or applicable for compressors. Am i wrong?

The inlet conditions and the pressure ratio are known.

Any ideas?

Greetings,

Charles

I figured out by myself how to calculate the mass flow as a function of the pressure ratio
 

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