航天推进技术研究院主办
[1]唐 飞,李家文.诱导轮平面叶栅汽蚀不稳定现象的数值分析[J].火箭推进,2011,37(01):34-39.
TANG Fei,LI Jia-wen.Numerical analysis of instable cavitation phenomenon in 2D blade cascade of inducer[J].Journal of Rocket Propulsion,2011,37(01):34-39.
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TANG Fei,LI Jia-wen.Numerical analysis of instable cavitation phenomenon in 2D blade cascade of inducer[J].Journal of Rocket Propulsion,2011,37(01):34-39.
诱导轮平面叶栅汽蚀不稳定现象的数值分析
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
37
期数:
2011年01期
页码:
34-39
栏目:
研究与设计
出版日期:
2011-02-15
- Title:
- Numerical analysis of instable cavitation phenomenon in 2D blade cascade of inducer
- 文章编号:
- 1672-9374(2011)01-0034-06
- Keywords:
- turbopump; inducer; cavitation instable phenomenon; numerical analy
- 分类号:
- V432-34
- 文献标志码:
- A
- 摘要:
- 诱导轮是现代液体火箭发动机中提高涡轮泵性能的关键部件，它可以在局部发生汽蚀的情况下工作，但是汽蚀所诱发的各种非定常不稳定现象会影响火箭发动机涡轮泵的性能、稳定性和寿命。本文利用基于Rayleigh-Plesset方程的混合流体模型，对诱导轮二维叶栅中的汽蚀不稳定现象进行了数值分析。结果表明，在一定汽蚀数范围内诱导轮容易发生汽蚀不稳定现象。随着汽蚀数的减小，诱导轮发生的汽蚀不稳定现象主要有：超同步旋转汽蚀、交替叶片汽蚀以及次同步旋转汽蚀。其中，超同步旋转汽蚀现象中的气穴长度周期变化频率高于转速频率。最后通过分析表明气穴长度周期变化的频率与流道内的轴向压力梯度有关：压力梯度越大，则气穴长度周期性变化的频率也越大。
- Abstract:
- A numerical analysis of cavitation instability phenomenon in a 2D blade cascade in inducer is performed with a mixture model based on Rayleigh-Plesset equation. The results indicate that the instability phenomena is easy to happen in the range of cavitation number. Three instable cavitation phenomena (super-synchronous rotating cavitation which propagates faster than the axis rotation, alternate blade cavitation and sub-synchronous rotating cavitation) appear in the inducer with the decrease of the cavitaion number. The analysis shows that the periodic change frequency of cavity length is related to the axial pressure gradient in the flow field. Higher pressure gradient leads to higher variation frequency of cavity length.
参考文献/References:
[1]BENOIT P, REGIANE F P. Numerical analysis of cavita-tion instabilities in inducer blade cascade[J]. Journal of Fluids Engineering, 2008, 130 (4): 1441-1448.
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[5]陈晖, 李斌, 张恩昭, 等. 液体火箭发动机高速转速诱导轮旋转空化 [J]. 推进技术, 2009, 30 (4): 390-395.
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[7]ZOLADZ T. Observations on rotating cavitation and cavitation surge from the development of the fastrac engine turbopump, AIAA A00-36617 [C]// 36th AIAA/AFI Joint Propulsion Conference and Exhibit. Sendai, Japan: JPCE, 2000: 100-110.
[8]ANGELO C, CRISTINA B, EMILIO R. Experimental characterization of cavitation instabilities in a two-bladed axial inducer [J]. Journal of Propulsion and Power, 2006, 22 (6): 1389-1395.
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备注/Memo
收稿日期：2010-10-19；修回日期：2010-11-29
作者简介： 唐飞（1982—），男，博士研究生，研究领域为离心泵设计与流场计
更新日期/Last Update:
1900-01-01