| Molecular tagging velocimetry of NH fluorescence in a high-enthalpy rarefied gas flow |
| Zhang SH(张少华) ; Yu XL(余西龙); Yan H; Huang HJ(黄河激); Liu HL(刘宏立); Yu, XL (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.; Yu, XL (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
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| 发表期刊 | APPLIED PHYSICS B-LASERS AND OPTICS
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| 2017-04-01
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| 卷号 | 123期号:4 |
| ISSN | 0946-2171
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| 摘要 | In this paper a new type of molecular tagging velocimetry based on NH fluorescence was developed and validated for the velocity measurements of a high-enthalpy rarefied gas wind tunnel where the maximum flow velocity exceeds 6 km/ s near the nozzle exit at 0.2 Pa. The feasibility of this technique using the short-lived NH fluorescence was demonstrated in the hypersonic rarefied gas flow with yielding velocity profiles at multiple downstream locations from the nozzle exit. The total uncertainty of the measured flow velocities was estimated to be less than 6% when the flow velocity is above 2000 m/ s. For the new tagging technique only a single laser and a single time-gated camera are required for velocity measurement due to the existence of NH radicals in the arc-discharged-N2 mixed with a small amount of H-2. Therefore the NH-MTV not only shows great promise for tagging in high-enthalpy rarefied gas of nitrogen or air flows without seeding but also possesses high practicability and facility for velocity measurement. |
| 关键词 | Molecular Tagging Velocimetry
Nh Fluorescence
High-enthalpy
Rarefied Gas
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| DOI | 10.1007/s00340-017-6703-1
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000401569400028
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| 关键词[WOS] | LASER-INDUCED FLUORESCENCE
; VELOCITY-MEASUREMENTS
; RAYLEIGH-SCATTERING
; PHOSPHORESCENCE
; VISUALIZATION
; DIFFUSION
; PRESSURE
; FLAMES
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| WOS研究方向 | Optics
; Physics
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| WOS类目 | Optics
; Physics, Applied
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| 项目资助者 | National Science Foundation of China(11672359)
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| 课题组名称 | LHD高温气流激光诊断
; LHD应用等离子体力学(CPCR)
; LHD微尺度和非平衡流动
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| 论文分区 | Q3
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| 力学所作者排名 | 1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/60551
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| 专题 | 高温气体动力学国家重点实验室
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| 通讯作者 | Yu, XL (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.; Yu, XL (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China. |
推荐引用方式
GB/T 7714 |
Zhang SH,Yu XL,Yan H,et al. Molecular tagging velocimetry of NH fluorescence in a high-enthalpy rarefied gas flow[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2017,123,4,.
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| APA |
张少华.,余西龙.,Yan H.,黄河激.,刘宏立.,...&Yu, XL .(2017).Molecular tagging velocimetry of NH fluorescence in a high-enthalpy rarefied gas flow.APPLIED PHYSICS B-LASERS AND OPTICS,123(4).
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| MLA |
张少华,et al."Molecular tagging velocimetry of NH fluorescence in a high-enthalpy rarefied gas flow".APPLIED PHYSICS B-LASERS AND OPTICS 123.4(2017).
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