Xie Aimin, Bu Shaoqing, Luo Jinyang. Primary study of large-field focusing schlieren technique based on tiled light sources[J]. Journal of Experiments in Fluid Mechanics, 2018, 32(6): 68-73. DOI: 10.11729/syltlx20180012
Citation: Xie Aimin, Bu Shaoqing, Luo Jinyang. Primary study of large-field focusing schlieren technique based on tiled light sources[J]. Journal of Experiments in Fluid Mechanics, 2018, 32(6): 68-73. DOI: 10.11729/syltlx20180012

Primary study of large-field focusing schlieren technique based on tiled light sources

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  • Received Date: February 01, 2018
  • Revised Date: November 06, 2018
  • With the development of wind tunnel test techniques, the size of the model is increasing, and the large-field flow visualization is becoming more and more important. Traditional schlieren and other flow visualization techniques are limited by the size of optical elements, and the field of view is difficult to exceed 1.0 meter. On the basis of the focusing schlieren technique, the Fresnel lens are replaced by the tiled LED light sources or other light sources, and the field of view can easily exceed 1.5 meter. After solving the problem of uniform illumination and heat dissipation of light sources, a principle device with 150mm field of view is set up, and the focusing schlieren images of the candle flame and the hot air flow field are clearly obtained. At the same time, multiple focusing lenses can be placed in this type of focusing schlieren system to show larger field of view or different sections. For the large field of view, it is necessary to increase the utilization efficiency of the light sources by the method of, for example, adding convergent lens at the rear end of the light source.
  • [1]
    徐翔, 谢爱民, 吕志国, 等.聚焦纹影显示技术在激波风洞的初步应用[J].实验流体力学, 2009, 23(3):75-79. DOI: 10.3969/j.issn.1672-9897.2009.03.016

    Xu X, Xie A M, Lyu Z G, et al. Application of focusing schlieren visualization system in shock tunnel experiment[J]. Journal of Experiments in Fluid Mechanics, 2009, 23(3):75-79. DOI: 10.3969/j.issn.1672-9897.2009.03.016
    [2]
    黄思源, 谢爱民, 白菡尘.双截面聚焦纹影技术应用研究[J].实验流体力学, 2011, 25(6):92-96. DOI: 10.3969/j.issn.1672-9897.2011.06.018

    Huang S Y, Xie A M, Bai H C. Application of dual-section focusing schlieren visualization system[J]. Journal of Experiments in Fluid Mechanics, 2011, 25(6):92-96. DOI: 10.3969/j.issn.1672-9897.2011.06.018
    [3]
    谢爱民, 黄洁, 徐翔, 等.激波风洞流场密度测量的聚焦纹影技术[J].实验流体力学, 2013, 27(2):82-86. DOI: 10.3969/j.issn.1672-9897.2013.02.016

    Xie A M, Huang J, Xu X, et al. Focusing schlieren technique applied to measure the flow density in shock tunnel[J]. Journal of Experiments in Fluid Mechanics, 2013, 27(2):82-86. DOI: 10.3969/j.issn.1672-9897.2013.02.016
    [4]
    岳茂雄, 王如琴, 姚向红, 等.高速聚焦纹影改进及应用[J].实验流体力学, 2013, 27(5):88-93. DOI: 10.3969/j.issn.1672-9897.2013.05.017

    Yue M X, Wang R Q, Yao X H, et al. Improved high-speed focusing schlieren system and its application[J]. Journal of Experiments in Fluid Mechanics, 2013, 27(5):88-93. DOI: 10.3969/j.issn.1672-9897.2013.05.017
    [5]
    黄训铭, 谢爱民, 郑蕾, 等.聚集纹影图像密度场处理技术[J].四川兵工学报, 2015, 36(6):77-81. DOI: 10.11809/scbgxb2015.06.020

    Huang X M, Xie A M, Zheng L, et al. Technique research of focusing schlieren images processing for getting flow density[J]. Journal of Sichuan Ordnance, 2015, 36(6):77-81. DOI: 10.11809/scbgxb2015.06.020
    [6]
    Weinstein L M. An improved large field focusing schlieren system[R]. AIAA-91-0567, 1991.
    [7]
    Cook S P, Chokani N. Quantitative results from the focusing schlieren technique[R]. AIAA-93-0630, 1993.
    [8]
    Weiss J, Chokani N. Integration properties of the focusing schlieren deflectometer[R]. AIAA-2006-2810, 2006.
    [9]
    Kouchi T, Goyne C P, Rockwell R D, et al. Focusing-schlieren visualization in direct-connet dual-mode scramjet[R]. AIAA-2012-5834, 2012.
    [10]
    Geerts J S, Yu K H. Application of focusing schlieren deflectometry to an isolator shock train[R]. AIAA-2015-1486, 2015.
    [11]
    关佳亮, 马新强, 曹成国, 等.大直径菲涅尔透镜模具加工机理[J].北京工业大学学报, 2015, 41(2):161-166. http://d.old.wanfangdata.com.cn/Periodical/bjgydxxb201502001

    Guan J L, Ma X Q; Cao C G, et al. Large diameter Fresnel lens mold machining mechanism[J]. Journal of Beijing University of Technology, 2015, 41(2):161-166. http://d.old.wanfangdata.com.cn/Periodical/bjgydxxb201502001
    [12]
    张红朝, 赵玉新, 杨涛.基于BOS的气动光学畸变测量与波前重构[J].空气动力学学报, 2010, 28(5):609-612. DOI: 10.3969/j.issn.0258-1825.2010.05.021

    Zhang H C, Zhao Y X, Yang T. Study of aero-optical aberration measuring method based on BOS[J]. Acta Aerodynamica Sinica, 2010, 28(5):609-612. DOI: 10.3969/j.issn.0258-1825.2010.05.021
    [13]
    张俊, 胥頔, 张龙.基于BOS技术的密度场测量研究[J].实验流体力学, 2015, 29(1):77-81. http://www.syltlx.com/CN/abstract/abstract10812.shtml

    Zhang J, Xu D, Zhang L. Research on density measurement based on background oriented schlieren method[J]. Journal of Experiments in Fluid Mechanics, 2015, 29(1):77-81. http://www.syltlx.com/CN/abstract/abstract10812.shtml
    [14]
    孔小平.成像制导中光学窗口表面热流测试新方法研究[D].长沙: 国防科学技术大学, 2014. https://max.book118.com/html/2017/1212/143778459.shtm

    Kong X P. Studies of new method of heat flux testing of the optical window in imaging-guiding[D]. Changsha: National University of Defence Technology, 2014. https://max.book118.com/html/2017/1212/143778459.shtm
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