The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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The Effect of the Diameter and Rotational Velocity on the Cavitation Performance of a Turbopump Inducer

터보펌프 인듀서의 흡입성능에 대한 직경과 회전속도의 영향

  • 손동기 (한국항공우주연구원 터보기계연구그룹) ;
  • 구현철 (한국항공우주연구원 터보기계연구그룹) ;
  • 차봉준 (한국항공우주연구원 터보기계연구그룹) ;
  • 양수석 (한국항공우주연구원 터보기계연구그룹) ;
  • 이대성 (한국항공우주연구원 추진기관연구부)
  • Published : 2002.03.01
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Abstract

The turbopump inducer cavitation is very important for the success of a liquid rocket engine. In this study, the performance test and cavitation performance test were carried out at various rotational speeds with two inducers of different diameter. The rotational speed was varied by 4000, 6000, and 8000 rpm, and the size effect was tested for the normal inducer and twice-enlarged one. The hydraulic performance results showed that the similarity was satisfied over the entire test range of the present study. The blade thickness effect was examined and showed that the increased blade thickness resulted in decreased efficiency and worse cavitation performance for the large tip clearance. The cavitation performance test results showed that the breakdown NPSH increased as the flow coefficient, and was not affected by the rotational speed.

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References

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  1. Effect of the number of blades on the performance and cavitation instabilities of a turbopump inducer with an identical solidity vol.29, pp.12, 2015, https://doi.org/10.1007/s12206-015-1126-6