Abstract
The structural and aerodynamic performance of the air inlet volute has an important influence on the performance of the gas turbine. On one hand, it requires the airflow flowing through inlet volute as even as possible, in order to reduce the pressure loss, to avoid a decrease in the effective output power and an increase of the fuel consumption rate of the internal combustion engine which indicate the inefficiency of the entire power unit; On the other hand, it requires the size of the inlet volute to be as small as possible in order to save mounting space and production costs. The thesis builds the structure model and develops flow fields numerical simulation of several different sizes of the inlet volutes. Further, the unreasonable aerodynamic structure is improved according to the flow field characteristics and thereby, a better aerodynamic performance of the inlet volute is obtained.
Highlights
It requires the airflow flowing through inlet volute as even as possible, in order to reduce the pressure loss, to avoid a decrease in the effective output power and an increase of the fuel consumption rate of the internal combustion engine which indicate the inefficiency of the entire power unit; On the other hand, it requires the size of the inlet volute to be as small as possible in order to save mounting space and production costs
The inlet volute structure and aerodynamic performance is an important part of the gas turbine research [1]
It requires that the airflow through the inlet volute as even as possible, the pressure loss as small as possible in order to avoid the reduced efficiency of the entire power plant; On the other hand, the size of the inlet volute should be as small as possible to make it easier to arrange under the premise of ensuring the performance requirements [2]
Summary
The inlet volute structure and aerodynamic performance is an important part of the gas turbine research [1]. Most researches has focused on the impeller for the thought that impeller has a greater impact on the compressor performance so that the studies on the airflow of inlet volute are fewer. Inlet volute has an important impact on compressor performance. The flow field uneven degree value of the compressor inlet volute outlet surface should be less than 15%. They mainly concentrate on three aspects: 1) Experimental test of the volute flow field; 2) Numerical simulation of the volute flow field; 3) Study on volute geometric characteristics
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