• Title/Summary/Keyword: Channel flows

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Development of Centrifugal Compressors in an 1.2MW Industrial Gas Turbine(I)-Aerodynamic Design and Analysis- (1.2MW급 산업용 가스터빈 원심압축기 개발(1)- 공력설계해석 -)

  • Jo, Gyu-Sik;Lee, Heon-Seok;Son, Jeong-Rak
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.20 no.8
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    • pp.2707-2720
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    • 1996

  • The aerodynamic design of the two-stages of centrifugal compressors in an 1.2MW industrial gas turbine is completed with the application of numerical analyses. The final shape of an intake, the axial guide vanes and a return channel is determined using several interactions between design and two-dimensional turbulent flow analysis, focused on the minimum loss of internal flows. The one-dimensional turbulent flow analysis, focused on the minimum loss of internal flows. The one-dimensional design and prediction of aerodynamic performances for the compressors are performed by two different methods; one is a method with conventional loss models, and the other a method with the two-zone model. The combination methods of the Betzier curves generate three-dimensional geometric shapes of impeller blades which are to be checked with a careful change of aerodynamic blade loadings. The impeller design is finally completed by the applications of three-dimensional compressible turbulent flow solvers, and the effect of minor change of design of the second-stage channel diffuser is also studied. All the aerodynamic design results are soon to the verified by component performance tests of prototype centrifugal compressors.

  • https://doi.org/10.22634/KSME-B.1996.20.8.2707 인용 PDF