IMECH-IR  > 高温气体动力学国家重点实验室
Uncertainty in velocity measurement based on diode-laser absorption in nonuniform flows
Li F(李飞); Yu XL(余西龙); Cai WW; Ma L; Ma, L; Virginia Tech, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA.
Source PublicationAPPLIED OPTICS
2012-07-10
Volume51Issue:20Pages:4788-4797
ISSN1559-128X
AbstractThis work investigates the error caused by nonuniformities along the line-of-sight in velocity measurement using tunable diode-laser absorption spectroscopy (TDLAS). Past work has demonstrated TDLAS as an attractive diagnostic technique for measuring velocity, which is inferred from the Doppler shift of two absorption features using two crossing laser beams. However, because TDLAS is line-of-sight in nature, the obtained velocity is a spatially averaged value along the probing laser beams. As a result, nonuniformities in the flow can cause uncertainty in the velocity measurement. Therefore, it is the goal of this work to quantify the uncertainty caused by various nonuniformities typically encountered in practice, including boundary layer effects, the divergence/convergence of the flow, and the methods used to fit the Doppler shift. Systematic analyses are performed to quantify the uncertainty under various conditions, and case studies are reported to illustrate the usefulness of such analysis in interpreting experimental data obtained from a scramjet facility. We expect this work to be valuable for the design and optimization of TDLAS-based velocimetry, and also for the quantitative interpretation of the measurements.
KeywordWavelength-modulation Spectroscopy Water-vapor Temperature Distributions Scramjet Combustor Gas Temperature Parameters Pressure Sensors
Subject Area实验流体力学
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000306291100028
DepartmentLHD高温气流激光诊断
Classification二类
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46552
Collection高温气体动力学国家重点实验室
Corresponding AuthorMa, L; Virginia Tech, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA.
Recommended Citation
GB/T 7714
Li F,Yu XL,Cai WW,et al. Uncertainty in velocity measurement based on diode-laser absorption in nonuniform flows[J]. APPLIED OPTICS,2012,51(20):4788-4797.
APA Li F,Yu XL,Cai WW,Ma L,Ma, L,&Virginia Tech, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA..(2012).Uncertainty in velocity measurement based on diode-laser absorption in nonuniform flows.APPLIED OPTICS,51(20),4788-4797.
MLA Li F,et al."Uncertainty in velocity measurement based on diode-laser absorption in nonuniform flows".APPLIED OPTICS 51.20(2012):4788-4797.
Files in This Item: Download All
File Name/Size DocType Version Access License
SCI-J2012-219.pdf(1161KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li F(李飞)]'s Articles
[Yu XL(余西龙)]'s Articles
[Cai WW]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li F(李飞)]'s Articles
[Yu XL(余西龙)]'s Articles
[Cai WW]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li F(李飞)]'s Articles
[Yu XL(余西龙)]'s Articles
[Cai WW]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: SCI-J2012-219.pdf
Format: Adobe PDF
This file does not support browsing at this time
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.