Optimizations of the volute of a centrifugal compressor
Sitkin, Pavel (2019)
Diplomityö
2019
School of Energy Systems, Energiatekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201901283292
https://urn.fi/URN:NBN:fi-fe201901283292
Tiivistelmä
The volute part of the centrifugal compressor is the research objects of this master thesis. The model is calculated by finite-difference elements method. Numerical experiments are accomplish at the optimum operating mode of the compressor fluid dynamics software. A study of the grid independent solution is carried out. Various models of turbulence were analysed.
In the research the geometry of the volute was also changed in order to obtain the dependence of the loss factor on the geometry of the output devices. Working fluid for the numerical simulation was air ideal gas and for experiment was air in a normal conditions.
Based on the results of the simulation, analysis of the dependence of the coefficient of loss on the shape of the volute are done. The results of a numerical experiment with the data of full-scale tests of a centrifugal compressor are compared.
In the research the geometry of the volute was also changed in order to obtain the dependence of the loss factor on the geometry of the output devices. Working fluid for the numerical simulation was air ideal gas and for experiment was air in a normal conditions.
Based on the results of the simulation, analysis of the dependence of the coefficient of loss on the shape of the volute are done. The results of a numerical experiment with the data of full-scale tests of a centrifugal compressor are compared.