ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Experiment on cavitation instability of inducer under wide-range operating conditions
Received date: 2024-11-06
Revised date: 2024-11-29
Accepted date: 2025-01-03
Online published: 2025-01-16
To develop the rocket engine turbo-pump with a wide range of stable operation， the influence of inlet flow coefficient on the dynamic characteristics of a three-blade inducer is examined based on visualization experiment and analysis of corresponding pressure fluctuation characteristics. It is revealed that the inducer blade tip pressure fluctuation amplitude increases with the increase of the inlet flow coefficient， and increases first and then decreases with the decrease of the cavitation number. The amplitude of inducer blade tip pressure fluctuation drops further to the non-cavitating condition in the vicinity of cavitation breakdown. Rotating cavitation is observed at 90%-110% design inlet flow coefficient. Additionally， it is clarified that the occurrence range of rotating cavitation extends to high cavitation number at a lower inlet flow coefficient， leading to the problem of operation stability. At 70%-80% Qd， where positive head-to-flow rate curve is caused by cavitation head breakdown， a sub-synchronous azimuthal instability of about 90% shaft frequency is identified as rotating choking， and an axial instability of about 70% shaft frequency as choked surge.
Ronghao LIN , Le XIANG , Kaifu XU , Yifan GAO , Zhenhai ZHU , Suibo LI . Experiment on cavitation instability of inducer under wide-range operating conditions[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(14) : 131502 -131502 . DOI: 10.7527/S1000-6893.2024.31502
| [1] | 包为民. 可重复使用运载火箭技术发展综述［J］. 航空学报， 2023， 44（23）： 629555. |
| BAO W M. A review of reusable launch vehicle technology development?［J］. Acta Aeronautica et Astronautica Sinica， 2023， 44（23）： 629555 （in Chinese）. | |
| [2] | 刘士杰， 王东， 田原， 等. 液体火箭发动机可重复使用性设计技术分析［J］. 火箭推进， 2024， 50（1）： 67-77. |
| LIU S J， WANG D， TIAN Y， et al. Analysis on reusability design technology of liquid rocket engine［J］. Journal of Rocket Propulsion， 2024， 50（1）： 67-77 （in Chinese）. | |
| [3] | 项乐， 许开富， 陈晖， 等. 液体火箭发动机涡轮泵低温空化实验研究进展［J］. 航空学报， 2023， 44（7）： 027131. |
| XIANG L， XU K F， CHEN H， et al. Experimental studies on cavitating flow for liquid rocket engine cryogenic turbopump： Review［J］. Acta Aeronautica et Astronautica Sinica， 2023， 44（7）： 027131 （in Chinese）. | |
| [4] | 李斌， 李程， 高玉闪， 等. 重复使用运载火箭液体动力技术发展［J］. 火箭推进， 2024， 50（1）： 1-11， 171. |
| LI B， LI C， GAO Y S， et al. Development of liquid propulsion technology for reusable launch vehicle［J］. Journal of Rocket Propulsion， 2024， 50（1）： 1-11， 171 （in Chinese）. | |
| [5] | JAPIKSE D. Centrifugal pump design and performance analysis［M］. Wilder ： Concepts ETI， Inc， 1997. |
| [6] | BRENNEN C E. Cavitation and Bubble Dynamics［M］. Cambridge： Cambridge Press， 1999. |
| [7] | 项乐， 陈晖， 谭永华， 等. 诱导轮空化流动特性实验研究［J］. 农业机械学报， 2019， 50（12）： 125-132. |
| XIANG L， CHEN H， TAN Y H， et al. Experiment of cavitating flow characteristics of inducer?［J］. Transactions of the Chinese Society for Agricultural Machinery， 2019， 50（12）： 125-132 （in Chinese）. | |
| [8] | TSUJIMOTO Y， YOSHIDA Y， MAEKAWA Y， et al. Observations of oscillating cavitation of an inducer［J］. Journal of Fluids Engineering， 1997， 119（4）： 775-781. |
| [9] | TSUJIMOTO Y， KAMIJIO K， Yoshida Y， A theoretical analysis of rotating cavitation in inducers［J］. Journal of Fluid Engineering， 1993， 115（4）： 135-141. |
| [10] | HASHIMOTO T， YOSHIDA M， WATANABE M， et al. Experimental study on rotating cavitation of rocket propellant pump inducers［J］. Journal of Propulsion and Power， 1997， 13（4）： 488-494. |
| [11] | PACE G， VALENTINI D， PASINI A， et al. Analysis of flow instabilities on a three-bladed axial inducer in fixed and rotating frames［J］. Journal of Fluids Engineering， 2019， 141（4）： 041104. |
| [12] | PACE G， VALENTINI D， PASINI A， et al. Geometry effects on flow instabilities of different three-bladed inducers［J］. Journal of Fluids Engineering， 2015， 137（4）： 041304. |
| [13] | LETTIERI C， SPAKOVSZKY Z， JACKSON D， et al. Characterization of cavitation instabilities in a four-bladed turbopump inducer［J］. Journal of Propulsion and Power， 2017， 34（2）： 510-520. |
| [14] | KIM J， SONG S J. Visualization of rotating cavitation oscillation mechanism in a turbopump inducer［J］. Journal of Fluids Engineering， 2019， 141（9）： 091103. |
| [15] | XIANG L， TAN Y H， CHEN H， et al. Experimental investigation of cavitation instabilities in inducer with different tip clearances?［J］. Chinese Journal of Aeronautics， 2021， 34（9）： 168-177. |
| [16] | WANG C M， XIANG L， TAN Y H， et al. Experimental investigation of thermal effect on cavitation characteristics in a liquid rocket engine turbopump inducer［J］. Chinese Journal of Aeronautics， 2021， 34（8）： 48-57. |
| [17] | FUJII A， AZUMA S， YOSHIDA Y， et al. Higher order rotating cavitation in an inducer?［J］. International Journal of Rotating Machinery， 2004， 10（4）： 241-251. |
| [18] | MOTOI H， OGUCHI H， HASEGAWA K， et al. Higher order cavitation surge and stress fluctuation in an inducer［C］∥Proceeding of the 45th Turbomachinery and Pump Symposium. Houston： Turbomachinery Laborutory， 2000. |
| [19] | BOYCE P B. Tip vortex back flow cavitation and suppression in high speed pump inducers［D］. Los Angeles： University of California， 2010. |
| [20] | LI X， LI J W， WANG J， et al. Study on cavitation instabilities in a three-bladed inducer［J］. Journal of Propulsion and Power， 2015， 31（4）： 1051-1056. |
| [21] | 陈晖， 李斌， 张恩昭， 液体火箭发动机高转速诱导轮旋转空化 ［J］， 推进技术， 2009， 35（3）： 1-5. |
| CHEN H， LI B， ZHANG E Z. CHEN H， LI B， ZHANG E Z， Rotating cavitation of the high-speed rotational inducer of LPRE［J］. Journal of Propulsion Technology， 2009， 35（3）： 1-5 （in Chinese）. | |
| [22] | KOKI T， SOTA K， SATOSHI K， et al. The similarity law of cavitation number on cavitation instability in liquid rocket inducer［J］. Journal of Fluid Engineering， 2023， 145（1）： 111201. |
| [23] | GULICH J F. Selection criteria for suction impellers of centrifugal pumps?［J］. World Pumps， 2001， 412?（1）： 28-34. |
| [24] | CHEN G T， GREITZER E M， TAN C S， et al. Similarity analysis of compressor tip clearance flow structure［J］. Journal of Turbomachinery， 1991， 113（2）： 260-269. |
| [25] | HADAVANDI R， PACE G， VALENTINI D， et al. Identification of cavitation instabilities on a three-bladed inducer by means of strain gages［J］. Journal of Fluids Engineering， 2020， 142（2）： 021210. |
| [26] | PASINI A， HADAVANDI R， VALENTINI D， et al. Dynamics of the blade channel of an inducer under cavitation-induced instabilities［J］. Journal of Fluids Engineering， 2019， 141（4）： 041103. |
| [27] | TSUJIMOTO Y， KAMIJO K， BRENNEN C. Unified treatment of flow instabilities of turbomachines?［C］?∥ 35th Joint Propulsion Conference and Exhibit. Reston： AIAA， 1999： 2678. |
| [28] | SEMENOV Y A， FUJII A， TSUJIMOTO Y. Rotating choke in cavitating turbopump inducer［J］. Journal of Fluids Engineering， 2004， 126（1）： 87-93. |
| [29] | UCHIUMI M， KAMIJO K. Occurrence Range of a Rotating Stall Type Phenomenon in a High Head Liquid Hydrogen Inducer［C］∥Proc. of the 12th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery. Honolulu： University of Hawaii at Manoa， 2008. |
| [30] | WATANABE T， KANG D H， CERVONE A， et al. Choked surge in a cavitating turbopump inducer［J］. International Journal of Fluid Machinery and Systems， 2008， 1（1）： 64-75. |
| [31] | WATANABE S， TSUJIMOTO Y. Prediction of cavitation surge onset point by one-dimensional stability analysis［J］. International Journal of Fluid Machinery and Systems， 2021， 14（2）： 199-207. |
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