A comparative study of highly underexpanded nitrogen and hydrogen jets using large eddy simulation
文献类型：期刊论文
| 作者 | Li XP(李晓鹏); Wu K(吴坤) ; Yao W(姚卫); Fan XJ(范学军)
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| 刊名 | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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| 出版日期 | 2016 |
| 卷号 | 41期号:9页码:5151-5161 |
| 通讯作者邮箱 | lxpyfy@163.com |
| 关键词 | Scramjet Hydrogen Highly underexpanded jet Large eddy simulation |
| ISSN号 | 0360-3199 |
| 产权排序 | [Li, Xiaopeng; Wu, Kun; Yao, Wei; Fan, Xuejun] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 通讯作者 | Li, XP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China. |
| 中文摘要 | Three-dimensional large eddy simulations (LES) of highly underexpanded hydrogen and nitrogen jets at the same nozzle pressure ratio (NPR) of 5.60 and at a Reynolds number around 105 are performed. The classical near-field structures of highly underexpanded jets are well captured by LES, especially the shape and size of Mach barrel for both jets are very similar and agree well with the available literature data. However, the flow field and the shock structures after the Mach disk differ significantly. The density in the annular shear layer of H-2 jet is much lower because of its smaller molecular weight. Meanwhile, the H-2 jet has a much longer jet core and more shock cells. The dominant instability mode is helical for the N-2 jet, but is axisymmetric for the H-2 jet. There are two discrete peaks of f(s) = 37.086 kHz and f(2s) = 45.695 kHz in the spectrum of the N-2 jet, while the spectrum of the H-2 jet is characterized by a fundamental screech frequency of f(s) = 47.020 kHz and its high-order harmonics. The H-2 jet mixes more rapidly with the ambient air but has a much smaller mixing area on cross-section planes. Mixing between the ambient air and fuel still takes places at the jet boundary defined according to the mixture fraction of Z = 0.02, and the area of fully turbulent region of the highly underexpanded jets seems to be less predicted based on the traditional vorticity T/NT (turbulent/non-turbulent) interface for both jets. Copyright (C) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. |
| 分类号 | 二类 |
| 类目[WOS] | Chemistry, Physical ; Electrochemistry ; Energy & Fuels |
| 研究领域[WOS] | Chemistry ; Electrochemistry ; Energy & Fuels |
| 关键词[WOS] | Scramjet ; Hydrogen ; Highly underexpanded jet ; Large eddy simulation |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.ijhydene.2016.01.120 |
| 语种 | 英语 |
| WOS记录号 | WOS:000372563100022 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59538]  |
| 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 | Li XP,Wu K,Yao W,et al. A comparative study of highly underexpanded nitrogen and hydrogen jets using large eddy simulation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2016,41(9):5151-5161. |
| APA | Li XP,Wu K,Yao W,&Fan XJ.(2016).A comparative study of highly underexpanded nitrogen and hydrogen jets using large eddy simulation.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,41(9),5151-5161. |
| MLA | Li XP,et al."A comparative study of highly underexpanded nitrogen and hydrogen jets using large eddy simulation".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 41.9(2016):5151-5161. |
入库方式： OAI收割
来源：力学研究所
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