Hypergolic ignition modulated by head-on collision, intermixing and convective cooling of binary droplets with varying sizes

doi:10.1016/j.ijheatmasstransfer.2019.05.040

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Hypergolic ignition modulated by head-on collision, intermixing and convective cooling of binary droplets with varying sizes
	Zhang DW; Yu DH; Zhang P; Yuan YM(袁越明); Yue LJ(岳连捷); Zhang TC(张泰昌); Fan XJ(范学军)
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2019-08-01
卷号	139 页码:475-481
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2019.05.040
通讯作者	Zhang, Peng(pengzhang.zhang@polyu.edu.hk)
英文摘要	The hypergolic ignition induced by the head-on collision of TMEDA and WFNA droplets was experimentally investigated with emphasis on the effect of droplet size on the ignitibility and the ignition delay time. The ignitibility regime nomogram in We - d(o) space indicates that the reduction of droplet size tends to suppress the hypergolic ignition. The ignition delay time, which was precisely determined by using grayscale level analysis, becomes shorter for smaller droplets. The seemingly conflicting size effects were resolved by means of time scaling analysis to reveal the size dependence of the three pre-ignition processes, which were identified as the first stage of droplet collision, deformation and intermixing, the second stage of droplet heating from interior to surface, and the third stage of droplet vaporization subject to heat loss by convective cooling. (C) 2019 Elsevier Ltd. All rights reserved.
分类号	一类
资助项目	Hong Kong RGC/GRF[PolyU 152217/14E] ; Hong Kong RGC/GRF[PolyU 152651/16E] ; NSFC[91641105] ; Hong Kong Polytechnic University[G-YBXN] ; Hong Kong Polytechnic University[G-SB1Q] ; Key Laboratory of High-temperature Gas Dynamics, Chinese Academy of Sciences
WOS关键词	NITRIC-ACID ; N,N,N',N'-TETRAMETHYLETHYLENEDIAMINE ; COALESCENCE ; SEPARATION
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000473381300040
资助机构	Hong Kong RGC/GRF ; NSFC ; Hong Kong Polytechnic University ; Key Laboratory of High-temperature Gas Dynamics, Chinese Academy of Sciences
其他责任者	Zhang, Peng
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79443]
专题	力学研究所_高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Zhang DW,Yu DH,Zhang P,et al. Hypergolic ignition modulated by head-on collision, intermixing and convective cooling of binary droplets with varying sizes[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2019,139:475-481.
APA	Zhang DW.,Yu DH.,Zhang P.,袁越明.,岳连捷.,...&范学军.(2019).Hypergolic ignition modulated by head-on collision, intermixing and convective cooling of binary droplets with varying sizes.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,139,475-481.
MLA	Zhang DW,et al."Hypergolic ignition modulated by head-on collision, intermixing and convective cooling of binary droplets with varying sizes".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 139(2019):475-481.