Abstract
The present paper seeks to model and simulate the function of a centrifugal GT4082 compressor and evaluates the effects of losses in the impeller, volute, and diffuser. It is also examined the mass parameter effect on the efficiency drop at different speeds. The total and static pressure drops are also examined in the volute and diffuser. Based on the experiments, the efficiency drops in these parts modeled at different mass parameters and speeds discovered to be maximized in the volute and diffuser at a specific speed. A global minimum was observed in the overall pressure drop and a global maximum in the static pressure drop versus a mass parameter.
Highlights
Turbomachines play a crucial role in the industry of fluids process
The present article performed a 3D simulation of a GT 4082 compressor, and modelled and investigated the flow patterns of the impeller, volute and diffuser
The efficiency drops in these parts modeled at different mass parameters and speeds were shown to be maximized in the volute and diffuser at a specific speed
Summary
Turbomachines play a crucial role in the industry of fluids process. Compressors are used as a significant turbomachine in aerospace, automobile, power plants, and oil industries [1]. Layth investigated the effect of inserting two splitter blades between the main blades instead of using conventional method [16] They could improve the mass flow rate and even efficiency and pressure ratio. Sugimura et al developed an optimization method by changing blades shape [18] while investigating the instability margin of the compressor. They found the inlet angle of the impeller to significantly affect the compressor efficiency. The purpose is to model and simulate the function of a centrifugal compressor and evaluates the effects of losses in the impeller, volute, and diffuser It is examined the mass parameter effect on the efficiency drop at different speeds. The total and static pressure drops are examined in the volute and diffuser
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