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Experimental investigation of energy loss in straight and bowed cascades with aft-loaded profiles

  • Xun Zhou*
  • , Wanjin Han
  • , Zhiqiang Lv
  • *Corresponding author for this work
  • School of Energy Science and Engineering, Harbin Institute of Technology
  • Harbin Turbine Co., Ltd.

Research output: Contribution to journalArticlepeer-review

Abstract

An experimental investigation was carried in a low speed annular wind tunnel. The energy loss evolution from upstream to downstream in the blade cascade channel with aft-loaded profiles was measured in detail. The results of the present study showed that energy loss was generated mainly in places near the leading and the trailing edges. Therefore, measurements were taken to improve the cascade performance by choosing the appropriate leading edge diameter, to provide a good match between the affecting length and the magnitude of adverse pressure gradient on suction surface, and to improve the static pressure distribution along the span height.

Original languageEnglish
Pages (from-to)108-119
Number of pages12
JournalHeat Transfer - Asian Research
Volume34
Issue number2
DOIs
StatePublished - Mar 2005
Externally publishedYes

Keywords

  • Aft-loaded profile
  • Bowed blade
  • Experimental investigation
  • Turbine

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