IMECH-IR  > 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)
Corresponding AuthorZhang, Peng(pengzhang.zhang@polyu.edu.hk)
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
2019-08-01
Volume139Pages:475-481
ISSN0017-9310
AbstractThe 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.
DOI10.1016/j.ijheatmasstransfer.2019.05.040
Indexed BySCI ; EI
Language英语
WOS IDWOS:000473381300040
WOS KeywordNITRIC-ACID ; N,N,N',N'-TETRAMETHYLETHYLENEDIAMINE ; COALESCENCE ; SEPARATION
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
Funding ProjectHong 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
Funding OrganizationHong Kong RGC/GRF ; NSFC ; Hong Kong Polytechnic University ; Key Laboratory of High-temperature Gas Dynamics, Chinese Academy of Sciences
Classification一类
Ranking4
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79444
Collection高温气体动力学国家重点实验室
Recommended Citation
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.
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