Turbocharger: Mass flow rate and pressure ratio

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SUMMARY

The discussion centers on the relationship between the pressure ratio and mass flow rate in vehicle turbocharger compression systems. Charles initially questions the applicability of Stodola's cone law for compressors but later confirms he has independently derived a method to calculate mass flow as a function of pressure ratio. The conversation highlights the importance of understanding these relationships for effective turbocharger system design.

PREREQUISITES
  • Understanding of turbocharger mechanics
  • Familiarity with pressure ratio calculations
  • Knowledge of mass flow rate principles
  • Basic grasp of thermodynamics related to compression systems
NEXT STEPS
  • Research the application of Stodola's cone law in turbocharger design
  • Explore advanced turbocharger modeling techniques
  • Learn about the impact of inlet conditions on compressor performance
  • Study the relationship between pressure ratio and efficiency in turbochargers
USEFUL FOR

Engineers and automotive designers involved in turbocharger system development, performance analysts, and anyone interested in optimizing vehicle compression systems.

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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