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基于飞秒激光的一维速度场测量方法
基于飞秒激光的一维速度场测量方法
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- Han, Lei (author)
- Tianjin University
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- Gao, Qiang (author)
- Tianjin University
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- Li, Bo (author)
- Tianjin University
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- Zhang, Da Yuan (author)
- Tianjin University
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- Bai, Xue Song (author)
- Lund University,Lunds universitet,Strömningsteknik,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Fluid Mechanics,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2022
- 2022
- Chinese 5 s.
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In: Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics. - 0253-231X. ; 43:1, s. 267-271
- Related links:
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https://lup.lub.lu.s...
Abstract
Subject headings
Close
- Femtosecond laser-induced cyano chemiluminescence uses femtosecond filaments to tag molecules in a flow field, and velocity information of the flow field can be obtained by observing the displacement of the tagged molecules within a known time. The one-dimensional (1D) emitting line contains 1D velocity field information, but only the velocity at the central point can be given because it is unable to precisely correlate the position information before and after the line moves. For this problem, we propose a 1D velocity field inversion algorithm, which can invert the velocity of the whole emitting line according to the displacement of the emitting line and its shape, and finally obtain the 1D-2C velocity field information on the line. By using the moving trajectory of multiple emitting lines we can also obtain the 2D velocity field information.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Femtosecond laser filamentation
- One-dimensional measurements
- Velocity field
Publication and Content Type
- art (subject category)
- ref (subject category)
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