航天推进技术研究院主办
[1]周晨初,张晨曦,陈宏玉,等.水击波压力尖峰产生的原因及其影响因素分析[J].火箭推进,2021,47(04):59-63.
ZHOU Chenchu,ZHANG Chenxi,CHEN Hongyu,et al.Analysis on the causes of pressure spike superimposed on water hammer and its influencing factors[J].Journal of Rocket Propulsion,2021,47(04):59-63.
点击复制
ZHOU Chenchu,ZHANG Chenxi,CHEN Hongyu,et al.Analysis on the causes of pressure spike superimposed on water hammer and its influencing factors[J].Journal of Rocket Propulsion,2021,47(04):59-63.
水击波压力尖峰产生的原因及其影响因素分析
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
47
期数:
2021年04期
页码:
59-63
栏目:
研究与设计
出版日期:
2021-08-31
- Title:
- Analysis on the causes of pressure spike superimposed on water hammer and its influencing factors
- 文章编号:
- 1672-9374(2021)04-0059-05
- 关键词:
- 液体火箭发动机 水击 压力尖峰 仿真
- 分类号:
- V430
- 文献标志码:
- A
- 摘要:
- 液体火箭发动机及其试验台关机过程中水击波上叠加的压力尖峰是造成产品破坏的常见故障之一。为分析该压力尖峰产生的原因,采用一维有限元法建立了发动机仿真模型,考虑阀门前后流道、容腔的影响,建立了主阀精细化仿真模型,利用试验数据验证了模型的正确性。在此基础上开展压力尖峰仿真研究,结果表明:该压力尖峰是由于阀门固有结构使得阀芯前流道变窄造成的 由于变窄后的流道一般较短,该局部水击持续时间极短,表现为尖峰状 改变阀门入口窄流道的长度后,水击曲线呈阶梯状,其幅值与管径呈反相关,持续时间与相应管路的长度呈正相关。
- Abstract:
- During the shutdown of liquid rocket engine and its test bed,the pressure spike superimposed on the water hammer is one of the common faults that cause product damage.In order to analyze the reason of this pressure spike,an engine simulation model is established by using one-dimension finite element method,and a refined model of the main valve is established by considering the influence of the narrow flow channel in front of valve core.The correctness of the model is verified by the experimental data.On this basis,the further study on this pressure spike is carried out.The results show that the pressure spike is caused by the narrow flow channel in front of valve core due to the inherent structure of the valve.Because the narrow flow channel is generally shorter,the duration of the local water hammer is so short that it appears as a spike.By changing the length of the narrow flow channel,the water hammer curve is stepped and its amplitude is inversely correlated with the pipe diameter,and its duration is positively correlated with the length of the corresponding pipeline.
参考文献/References:
[1] WYLIE E B,STREETER V L,SUO L S.Fluid transients in systems[M].New Jersey:Prentice Hall Inc,1993.
[2] 李文勋.水力学中的微分方程及其应用[M].韩祖恒,郑开琪,译.上海:上海科学技术出版社,1982.
[3] 李树慧,蔡怀森.浅析水击理论的发展及现状[J].科技信息,2010(3):422-423.
[4] 黎勤武,张为华,王振国,等.空间发动机系统关机过程水击现象理论分析[J].推进技术,1998,19(3):27-29
[5] 刘洋,曹文庆,唐斌运,等.试验台冷却水系统水击压力仿真研究[J].火箭推进,2016,42(1):83-87.
LIU Y,CAO W Q,TANG B Y,et al.Simulation study on water hammer pressure in cooling water system of LRE test-bed[J].Journal of Rocket Propulsion,2016,42(1):83-87.
[6] 刘海飞,陈虹,王天祥,等.低温液体推进剂加注管路中水击现象研究[C]//第十三届全国水动力学学术会议暨第二十六届全国水动力学研讨会论文集.青岛:水动力学学术学会,2014.
[7] 窦唯,胡长喜.液体火箭发动机水击特陛仿真及试验研究[J].火箭推进,2013,39(2):40-45.
DOU W,HU C X.Simulation and testing research for water hammer characteristic of liquid rocket engine[J].Journal of Rocket Propulsion,2013,39(2):40-45.
[8] 刘照智,丁鹏飞,田青亚.液氢加注系统水击问题数值分析[J].导弹与航天运载技术,2010,(4):10-12.
[9] 曹慧哲,贺志宏,何钟怡.有压管道水击波动过程及优化控制的解析研究[J].工程力学,2008,25(6):22-26.
[10] 陈勇,李隆键,程静.液氧输送管路中阀控瞬变的数值计算[J].哈尔滨工业大学学报,2013,45(9):75-81.
[11] 周晨初,李舒欣,陈宏玉,等.液体火箭发动机关机水击特性仿真[J].火箭推进,2021,47(1):70-75.
ZHOU C C,LI S X,CHEN H Y,et al.Simulation on water hammer during liquid rocket engine shutdown[J].Journal of Rocket Propulsion,2021,47(1):70-75.
[12] SASSNICK H D,KRUELLE G.Numerical simulation of transients in feed systems for cryogenic rocket engines[C]//31st Joint Propulsion Conference and Exhibit.San Diego,CA:AIAA,1995.
[13] 林景松,王平阳,高红,等.液体火箭发动机关机水击的数值模拟[J].上海航天,2008,25(3):53-57.
[14] 张育林,刘昆,程谋森.液体火箭发动机动力学理论与应用[M].北京:科学出版社,2005.
[15] 刘昆,张育林.一维可压缩流的有限元状态空间模型[J].推进技术,1999,20(5):62-66.
[16] HELMICKI A J,JAWEED S,KOLCIO K.Propulsion system modelling for condition monitoring and control:a status report[EB/OL].1994.
[17] KOLCIO K,HELMICKI A J,JAWEED S.Propusion system modeling for condition monitoring and control:partⅡapplication to the SSME [R].AIAA 94-3228.
[18] TIJSSELING A S,BERGANT A.Meshlesscomputationof water hammer[C]//Proceedings of 2nd IAHR Interna-tional Meeting of the Workgroup on Cavitation and Dy-namic Problems in Hydraulic Machinery and Systems.Timisoara,Romania:IAHR,2007.
[19] 陈宏玉,刘红军,刘上.水击问题的Fourier谱方法计算[J].火箭推进,2012,38(3):7-11.
CHEN H Y,LIU H J,LIU S.Spectral-Fourier method for water hammer[J].Journal of Rocket Propulsion,2012,38(3):7-11.
[20] 陈宏玉,刘红军,陈建华,等.Chebyshev超谱粘性法在推进剂供应管路非定常流动分析中的应用[J].推进技术,2012,33(5):804-808.
[21] GUO B Y.Spectral methods and their applications[M].Singapore:World Scientific,1998.
备注/Memo
收稿日期:2021-02-25
基金项目:国家自然科学基金(11602186)
作者简介:周晨初(1990—),男,硕士,研究领域为液体火箭发动机系统动力学仿真。
更新日期/Last Update:
1900-01-01