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Spray combustion characteristics of a gas-liquid pintle injector with variable swirl intensities

文献类型：期刊论文

作者He, Chengming3,4; Luo, Weihang3; Zhang, Peng2; He, Zhixia4; Yue, Lianjie1,3; Yue LJ(岳连捷)
刊名PHYSICS OF FLUIDS
出版日期2023-09-01
卷号35期号:9页码:15
ISSN号1070-6631
DOI10.1063/5.0164130
通讯作者Yue, Lianjie(yuelj@imech.ac.cn)
英文摘要The present paper experimentally verified and computationally explained an improved design concept of the spray combustion of a gas-liquid pintle injector with variable swirl intensities. By pintle injector, we mean a promising injector for the throttleable engines with variable thrust capacities, which features the moveable pintle continuously controlling the mass flow rates of fuel and oxidizer where the radial and axial flows encounter to form a spray cone and spray atomization. First, the cold flow test was conducted to study the swirl effects on the spray angle, followed by the combustion test to study the total pressure and the specific impulse under different swirl intensities. The results show that the swirl enhances the combustion performance by increasing the total pressure and specific impulse. Second, the swirl-assisted spray was numerically simulated based on a validated volume-of-fluid method to explain the experimental findings. The diameter distribution and spatial distribution of dispersed droplets were analyzed by the Sauter mean diameter (SMD) and the Voronoi tessellation, respectively. The results show that the swirl significantly promotes the breakup of liquid jet or film, producing smaller SMDs and a more uniform spatial distribution of dispersed droplets. The consolidated correlation between the non-reacting spray characteristics and the combustion performance suggests that the proposed methodology can be used to fast prescreen pintle injector designs.
WOS关键词PRIMARY ATOMIZATION ; FLOW CHARACTERISTICS ; DYNAMIC-RESPONSE ; ADAPTIVE SOLVER ; ENGINE ; INSTABILITY ; SIMULATION ; PERFORMANCE ; PREDICTION ; ATOMIZERS
资助项目National Science Foundation of China[12102437] ; National Science Foundation of China[52176134] ; National Science Foundation of China[U2141220] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Research Grants Council of the Hong Kong Special Administrative Region, China[CityU 15222421] ; Research Grants Council of the Hong Kong Special Administrative Region, China[CityU 15218820]
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001064259500003
资助机构National Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Research Grants Council of the Hong Kong Special Administrative Region, China
源URL[http://dspace.imech.ac.cn/handle/311007/93108]  
专题力学研究所_高温气体动力学国家重点实验室
通讯作者Yue, Lianjie
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.City Univ Hong Kong, Dept Mech Engn, Kowloon Tong, Hong Kong 999077, Peoples R China
3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
4.Jiangsu Univ, Inst Energy Res, Zhenjiang 212013, Peoples R China
推荐引用方式
GB/T 7714		 He, Chengming,Luo, Weihang,Zhang, Peng,et al. Spray combustion characteristics of a gas-liquid pintle injector with variable swirl intensities[J]. PHYSICS OF FLUIDS,2023,35(9):15.
APA He, Chengming,Luo, Weihang,Zhang, Peng,He, Zhixia,Yue, Lianjie,&岳连捷.(2023).Spray combustion characteristics of a gas-liquid pintle injector with variable swirl intensities.PHYSICS OF FLUIDS,35(9),15.
MLA He, Chengming,et al."Spray combustion characteristics of a gas-liquid pintle injector with variable swirl intensities".PHYSICS OF FLUIDS 35.9(2023):15.

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来源：力学研究所

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