Browse > Article
http://dx.doi.org/10.3795/KSME-B.2005.29.11.1239

A Study on the Suppression of Cavitation in Inducer by J-Groove  

Choi, Young-Do (요코하마국립대학 대학원 공학연구원)
Kurokawa, Junichi (요코하마국립대학 대학원 공학연구원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.11, 2005 , pp. 1239-1247 More about this Journal
Abstract
Cavitation is the most serious problem in developing high-speed turbopump, and inducer is often used to avoid cavitation in main impeller. Thus, inducer is always operating in the worst .cavitation condition. If it is possible to control and suppress cavitation in inducer by some new device, it might be possible to suppress cavitation occurring in any type of pumps. The purpose of present study is to develop a new effective method of controlling and suppressing cavitation in inducer using shallow grooves, which is named 'J-Groove'. J-Groove is installed on the casing wall near the blade tip to use the pressure difference between high pressure region and low pressure region of the inducer in an axial direction. The results show that proper combination of backward-swept inducer with J-Groove improves suction performance of turbopump remarkably in the range of partial flow rate as well as designed flow rate. The rotating backflow cavitation occurring in the range of low flow rate and the cavitation surge occurring in the vicinity of the best efficiency point can be almost suppressed by installing J-Groove.
Keywords
Cavitation; Inducer; J-Groove; Suction Performance; Turbopump;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Tsujimoto, Y., Yoshida, Y., Maekawa, Y., Watanabe, S. and Hashimoto, T., 1997, 'Observations of Oscillating Cavitation of an Inducer,' Trans. ASME J. of Fluids Eng., Vol. 119, pp. 775-781   DOI   ScienceOn
2 Imano, A. and Hashijume, N., 2001, 'LE-7 Engine Turbo-pump and the Cause of Failure in H-II Rocket No. 8,' Turbomachinery (TSJ), Vol. 29, pp. 139-146
3 Kamijo, K. and Yoshida, M., 1991, 'Experimental Study of LE-7 LOX Pump Inducer,' Trans. of the JSME (B), Vol. 57, pp. 4023-4028
4 Fujii, A., Azuma, S., Yoshida, Y., Tsujimoto, Y., Horiguchi, H. and Watanabe, S., 2002, 'Higher Order Rotating Cavitation in an Inducer,' Trans. of the JSME (B), Vol. 68, pp. 1466-1473
5 Tahara, H. and Manabe, A., 1984, 'Influence of Inlet and Outlet Angles of Inducer on Improvement in Suction Performance of Centrifugal Pump,' Trans. of the JSME (B), Vol. 50, pp. 2619-2624   DOI   ScienceOn
6 Bakir, F., Kouidri, S., Noguera, R. and Rey, R., 2003, 'Experimental Analysis of an Axial Inducer Influence of the Shape of the Blade Leading Edge on the Performances in Cavitating Regime,' Trans. ASME J. of Fluids Eng., Vol. 125, pp. 293-301   DOI   ScienceOn
7 Takamatsu, Y., Furukawa, M. and Ishizaka, K., 1978, 'Suction Performance Improvement of a Centrifugal pump by Helical Inducer,' Trans. of the JSME (B), Vol. 44, pp. 960-969   DOI
8 Takamatsu, Y., Furukawa, M., Ishizaka, K. and Nikamoto, H., 1978, 'Outlet Flow of a Planar Helical Inducer,' Trans. of the JSME (B), Vol. 44, pp. 950-959   DOI
9 Japikse, D, 2001, 'Overview ofIndustrial and Rocket Turbopump Inducer Design,' Proc. CAV2001, Session B7.001
10 Lakshminarayana, B., 1982, 'Fluid Dynamics of Inducers - A Review,' Trans. ASME J. of Fluids Eng., Vol. 104, pp. 411-427   DOI
11 Kurokawa, J., Saha, S. L., Matsui, J. and Kitahora, T., 2000, 'Passive Control of Rotating Stall in a Parallel-Wall Vaneless Diffuser by Radial Grooves,' Trans. ASME J. of Fluids Eng., Vol. 122, pp. 90-96   DOI   ScienceOn
12 Saha, S. L., Kurokawa, J., Matsui, J. and Imamura, H., 2000, 'Suppression of Performance Curve Instability of a Mixed Flow Pump by Use of J-Groove,' Trans. ASME J. of Fluids Eng., Vol. 122, pp. 592-597   DOI   ScienceOn
13 Saha, S. L., Kurokawa, J., Matsui, J. and Imamura, H., 2001, 'Passive Control of Rotating Stall in a Parallel-Wall Vaned Diffuser by J-Grooves,' Trans. ASME J. of Fluids Eng., Vol. 123, pp. 507-515   DOI