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

doi:10.1063/5.0164130

	Spray combustion characteristics of a gas-liquid pintle injector with variable swirl intensities
	He CM(何成明); Luo WH(罗苇航); Zhang, Peng; He, Zhixia; Yue LJ(岳连捷)
通讯作者	Yue, Lianjie(yuelj@imech.ac.cn)
发表期刊	PHYSICS OF FLUIDS
	2023-09-01
卷号	35 期号:9 页码:15
ISSN	1070-6631
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.
DOI	10.1063/5.0164130
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001064259500003
关键词[WOS]	PRIMARY ATOMIZATION ; FLOW CHARACTERISTICS ; DYNAMIC-RESPONSE ; ADAPTIVE SOLVER ; ENGINE ; INSTABILITY ; SIMULATION ; PERFORMANCE ; PREDICTION ; ATOMIZERS
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
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]
项目资助者	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
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Yue, Lianjie
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/93109
专题	高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	He CM,Luo WH,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	何成明,罗苇航,Zhang, Peng,He, Zhixia,&岳连捷.(2023).Spray combustion characteristics of a gas-liquid pintle injector with variable swirl intensities.PHYSICS OF FLUIDS,35(9),15.
MLA	何成明,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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