Numerical investigation of aerodynamic load on the impellers of centrifugal compressor with leakage flow

Jianchi Xin; Xiaofang Wang; Haitao Liu; Wang wei; Lusheng Zhou

doi:10.5293/IJFMS.2020.13.2.409

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자료유형: 학술저널

저자정보: Jianchi Xin (Dalian University of Technology) Xiaofang Wang (Dalian University of Technology) Haitao Liu (Nanyang Technological University) Wang wei (Dalian University of Technology) Lusheng Zhou (Dalian University of Technology)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.13 No.2

발행연도: 2020.6

수록면: 409 - 424 (16page)

DOI: 10.5293/IJFMS.2020.13.2.409

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Based on computational fluid dynamics (CFD) simulation, this study investigates the effect of leakage flow on the performance of centrifugal compressor, which helps to showcase the flow phenomenon considering the leakage flow and the aerodynamic load on the impellers. We consider four types of compressor models including the normal stage with hub and shroud leakages (SWT), the normal stage with hub leakage (SWH), the normal stage with shroud leakage (SWS), and the normal stage without leakages (SOT)). The results indicate that the leakage flow obviously affects the compressor performance, especially the flow field around the leading/trailing edge of the impeller. The aerodynamic load at the leading/trailing edge of the impeller was obtained for the models through unsteady simulation. The dominant frequency and the pulse amplitude obtained by Fast Fourier transforms revealed that the main frequencies of the aerodynamic load present different distributions under different leakage flows.

#CFD #Leakage flow #Aerodynamic load #Centrifugal compressor

참고문헌 (17)

참고문헌 신청

Japikse, D. / 1996 / Centrifugal compressor design and performance(Book) / Concepts ETI, Inc

Guidotti, E. / 2012 / Cavity flow modeling in an industrial centrifugal compressor stage at design and off-design conditions / Proc. ASME Turbo Expo 2012: Turbine Technical Conference and Exposition :593~603

Guidotti, E. / 2012 / Influence of seal leakages modeling on low flow coefficient centrifugal compressor stages performance / Proc. ATI Congress

Guidotti, E. / 2013 / Accuracy of centrifugal compressor stages performance prediction by means of high fidelity cfd and validation using advanced aerodynamic probe / ASME Paper No. GT2013-95618

Guidotti, E. / 2014 / Influence of cavity flows modeling on centrifugal compressor stages performance prediction across different flow coefficient impellers / Proc. ASME Turbo Expo 2014

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