The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Effect of Tip Clearance on the Performance of a Turbopump Inducer

끝틈새가 터보펌프 인듀서의 성능에 미치는 영향

  • 홍순삼 (한국항공우주연구원 터보펌프그룹) ;
  • 김진선 (한국항공우주연구원 터보펌프그룹) ;
  • 최창호 (한국항공우주연구원 터보펌프그룹) ;
  • 김진한 (한국항공우주연구원 터보펌프그룹)
  • Published : 2006.02.01
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Abstract

Experiments are carried out to investigate the effect of radial tip clearance on a turbopump inducer, which has two blades with inlet tip blade angle of 7.8 degree and tip solidity of 2.7. Hydraulic and cavitation tests are performed for three cases of tip clearance ratio, that is, 0.026, 0.053, and 0.079. With increase in the tip clearance, inducer head and pressure on the inducer tip decrease. Attached cavitation and cavitation surge are observed in the cavitation tests. In the attached cavitation one cell rotates at the same rotational speed as that of the inducer. Cavitation performance deteriorates with increase in the tip clearance. The level of casing vibration increases in the cavitation condition and the level is very high when the attached cavitation appears.

Keywords

References

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Cited by

  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