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Performance analysis of a centrifugal compressor with variable inlet guide vanes

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Abstract

The flow in a centrifugal compressor stage with variable inlet guide vanes (VIGVs) is investigated by numerical simulation in this paper. Analysis of the performance curves and relative velocity vectograms indicates that performance curves shift toward small flow domain when VIGVs turn positively, and toward large flow domain when VIGVs turn negatively. Stage efficiency drops quickly after work condition enters a small flow domain through the peak efficiency point. Under the circumstance of large setting angles of the guide vanes, there exist obvious flow separations in guide vane passages within wide flow ranges, and back flow regions can be located at the front of splitter suction surfaces under large flow conditions, while under the condition of small flow, flow separations occur on suction surfaces of long blades.

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Authors and Affiliations

  1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200030, China

    Xiao Jun, Gu Chuangang, Shu Xinwei & Gao Chuang

Authors
  1. Xiao Jun
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  2. Gu Chuangang
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  3. Shu Xinwei
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  4. Gao Chuang
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Corresponding author

Correspondence to Xiao Jun.

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Translated from Journal of Power Engineering, 2006, 26(6): 804–807 [译自: 动力工程]

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Xiao, J., Gu, C., Shu, X. et al. Performance analysis of a centrifugal compressor with variable inlet guide vanes. Front. Energy Power Eng. China 1, 473–476 (2007). https://doi.org/10.1007/s11708-007-0070-6

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  • DOI: https://doi.org/10.1007/s11708-007-0070-6

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