低温流体汽蚀的数值计算及可视化实验研究

推进技术 ›› 2017, Vol. 38 ›› Issue (12): 2771-2777.

低温流体汽蚀的数值计算及可视化实验研究

姜映福,刘中祥,褚宝鑫

北京航天动力研究所，北京 100076,北京航天动力研究所，北京 100076,北京航天动力研究所，北京 100076

发布日期:2021-08-15
作者简介:姜映福，男，硕士生，研究领域为低温诱导轮汽蚀。

Numerical Simulation and Visualized Experimental Study on Cavitating of Cryogenic Fluids

Beijing Aerospace Propulsion Institute，Beijing 100076，China,Beijing Aerospace Propulsion Institute，Beijing 100076，China and Beijing Aerospace Propulsion Institute，Beijing 100076，China

Published:2021-08-15

摘要/Abstract

摘要： 为研究热效应对低温流体汽蚀的影响，选取文氏管为研究对象，进行数值计算及可视化实验研究。低温汽蚀计算模型考虑能量守恒的影响，物性参数随温度变化。使用高速摄影拍摄汽蚀发生位置及汽蚀区大小。热效应对常温水汽蚀的抑制很小为1.14%。液氮考虑热效应计算与实验结果误差为2.64%，吻合较好。由于低温流体的热物性，汽蚀发生伴有显著的温降及压降，汽蚀过程减弱，汽蚀区减小，最大体积分数下降20%，热效应对低温汽蚀的抑制作用明显。低温汽蚀受动量和能量交换的共同作用，液相、气相相互拖拽能力增强，汽蚀核心区由壁面扩展到整个流道；汽蚀区和气液界面的气泡浓度变化梯度更加平缓，气液界面不清晰。

关键词: 低温汽蚀；热效应；可视化实验；数值计算；汽蚀长度

Abstract: To analyze the effect of the thermodynamic effects of cryogenic fluids cavitation， the venturi was selected as the research object， and the numerical simulation and visualized experimental research were conducted as well. Numerical model of the cryogenic cavitation considering the influence of energy conservation and physical properties were set to be updated with temperature. The location and size of cavitation were recorded by high speed photography. The inhibition of the thermodynamic effects on the room temperature water cavitation was 1.14%， which can be ignored. The error of liquid nitrogen considering thermodynamic effects calculation and experimental result was 2.64%， the calculation was in good agreement with the experimental result. Due to the thermal physical properties of the cryogenic fluids， cavitation is accompanied by significant temperature drop and pressure drop， cavitation process is weakened and cavitation zone decreases， maximum volume fraction decreased by 20%. The inhibition of thermodynamic effects on the cryogenic cavitation is obvious. Cryogenic cavitation is influenced by the effect of momentum and energy， and the interaction of the liquid phase and vapor phase is enhanced， the cavitation core region extending from wall to the whole passage. The bubble concentration gradient of cavitation zone and gas-liquid interface is gentler， gas-liquid interface is not clear.

Key words: Cryogenic cavitation；Thermodynamic effects；Visualization experiments；Numerical simulation；Cavitation length

姜映福,刘中祥,褚宝鑫. 低温流体汽蚀的数值计算及可视化实验研究[J]. 推进技术, 2017, 38(12): 2771-2777.

JIANG Ying-fu,LIU Zhong-xiang,CHU Bao-xin. Numerical Simulation and Visualized Experimental Study on Cavitating of Cryogenic Fluids[J]. Journal of Propulsion Technology, 2017, 38(12): 2771-2777.

参考文献

[1] 关醒凡. 现代泵理论与设计[M]. 北京:中国宇航出版社, 2011.
[2] Jackson J K. Liquid Rocket Engine Turbopump Inducers[R]. NASA SP-8052, 1971: 26-31.
[3] 杰克布森 J K. 液体火箭发动机涡轮泵诱导轮[M]. 傅轶青, 陈炳贵, 译, 北京:国防工业出版社, 1971.
[4] 陈泰然, 顾玲燕, 王国玉, 等. RP-3 航空煤油不同替代模型的空化流动特性[J]. 推进技术, 2016, 37(3):563-571. (CHEN Tai-ran, GU Ling-yan, WANG Guo-yu, et al. Cavitating Flow Characteristics of RP-3 Aviation Kerosene Surrogate Mixture Models[J]. Journal of Propulsion Technology, 2016, 37(3): 563-571.)
[5] Rapposelli E. A Barotropic Cavitation Model with Thermodynamic Effects[C]. Osaka: In 5th International Symposium on Cavitation, 2003.
[6] Merkle C L, Feng J, Bulow P E O. Computational Modeling of Dynamics of Sheet Cavitation[C]. Grenoble :In Proc.3rd International Symposium on Cavitation, 1998.
[7] SenoeaK I, Shyy W. A Pressure-Based Method for Turbulent Cavitating Flow Computations[J]. Journal of Computational Physics, 2002, 172(2): 363-383.
[8] Delannoy Y, Kueny J L. Two Phase Flow Approach in Unsteady Cavitation Modeling[J]. Cavitation and Multiphase Flow Forum, 1990, 98: 153-158.
[9] Kubota A, Kato H, Yamaguchi H, et al. Unsteady Structure Measurement of Cloud Cavitation on a Foil Section Using Conditional Sampling Technique[J]. Journal of Fluids Engineer, 1989, 111(2): 204-210.
[10] Schnerr G H, Sauer J. Physical and Numerical Modeling of Unsteady Cavitation Dynamics[C]. New Orleans:Proceedings of 4th International Conference on Multiphase Flow, 2001.
[11] Utturkar Y. Recent Progress in Modeling of Cryogenic Cavitation for Liquid Rocket Propulsion[J]. Progress in Aerospace Sciences, 2005. 41(7): 558-608.
[12] Tseng C C, Shyy W. Modeling for Isothermal and Cryogenic Cavitation[J]. International Journal of Heat and Mass Transfer, 2010, 53(1): 513-525.
[13] Park W, Ha C, Merkle C. Multiphase Flow Analysis of Cylinder Using a New Cavitation Model[C]. Washington:7th International Symposium on Cavitation, 2009.
[14] 王洪杰, 舒崚峰, 赵俊龙, 等. 涡轮泵非设计工况压力脉动数值研究[J]. 推进技术, 2014, 35(1):43-53.(WANG Hong-jie, SHU Ling-feng, ZHAO Jun-long, et al. Numerical Investigation of Pressure Fluctuation in Turbopump under Off-Design Condition[J]. Journal of Propulsion Technology, 2014, 35(1): 43-53.)
[15] 唐飞, 李家文. 液体火箭发动机诱导轮旋转汽蚀分析[J]. 推进技术, 2012, 33(4): 639-644. ( TANG Fei, LI Jia-wen. Analysis of Rotating Cavitation in Inducers for Liquid Rocket Engine[J]. Journal of Propulsion Technology, 2012, 33(4): 639-644.)
[16] Hord J, Anderson L M, Hall W J. Cavitation in Liquid Cryogens I-Venturi[R]. NASA CR-2045, 1972.
[17] 曹潇丽. 低温流体汽蚀的CFD模拟及实验研究[D]. 杭州:浙江大学, 2011.
[18] Xu C , Heister S D, Collicott S H , et al. Modeling Cavitating Venturi Flows[J]. Journal of Propulsion and Power, 2002 , 18(6): 1227-1234.
[19] Zhu J, Chen Y, Zhao D, et al. Extension of the Schnerr-Sauer Model for Cryogenic Cavitation [J]. European Journal of Mechanics-B/Fluids, 2015, 52: 1-10.
[20] 王福军. 计算流体力学分析[M]. 北京:清华大学出版社, 2004, 120-132.
[21] Lemmon E W, McLinden M O, Huber M L. Reference Fluid Thermodynamic and Transport Properties[R]. NIST Standard Database 23, 2002.
[22] Hosangadi A, Ahuja V. Numerical Study of Cavitation in Cryogenic Fluids[J]. Journal of Fluids Engneer, 2005, 127(2): 267-281.(编辑:张荣莉)　　　　　　　　　　　　　*　收稿日期:2016-08-14；修订日期:2016-10-10。作者简介:姜映福,男,硕士生,研究领域为低温诱导轮汽蚀。E-mail: jyf20184_buaa@163.com