CAJ | 학술논문

近年来，与高速飞行器相关的超声速/高超声速流动受到了极大关注。这类流动所具有的非定常性、强梯度和可压缩性对试验研究提出了挑战。纳米示踪的平面激光散射技术（NPLS）是2005年由作者所在的研究团队研发的非接触光学测试技术。它能够获得超声速三维流场的某个剖面的瞬态流动结构，并且具有较高的时空分辨率。目前，许多研究结果表明NPLS是研究超声速湍流的一项非常有效的技术。近年来，作者应用 NPLS 技术在超声速湍流研究中取得了较大的进展，并且基于NPLS开发了其它几种技术，比如基于 NPLS 的密度场测量技术（NPLS-DT），能够获得超声速流动的密度场信息并还能进一步得到雷诺应力分布。本文介绍了NPLS技术并回顾了其在超声速边界层、激波/边界层相互作用等流动中的应用。由于能够获得雷诺压力和湍动能等统计量， NPLS技术有望在发展可压缩湍流模型的研究中发挥作用。
근년래，여고속비행기상관적초성속/고초성속류동수도료겁대관주。저류류동소구유적비정상성、강제도화가압축성대시험연구제출료도전。납미시종적평면격광산사기술（NPLS）시2005년유작자소재적연구단대연발적비접촉광학측시기술。타능구획득초성속삼유류장적모개부면적순태류동결구，병차구유교고적시공분변솔。목전，허다연구결과표명NPLS시연구초성속단류적일항비상유효적기술。근년래，작자응용 NPLS 기술재초성속단류연구중취득료교대적진전，병차기우NPLS개발료기타궤충기술，비여기우 NPLS 적밀도장측량기술（NPLS-DT），능구획득초성속류동적밀도장신식병환능진일보득도뢰낙응력분포。본문개소료NPLS기술병회고료기재초성속변계층、격파/변계층상호작용등류동중적응용。유우능구획득뢰낙압력화단동능등통계량， NPLS기술유망재발전가압축단류모형적연구중발휘작용。
Supersonic/hypersonic flows involved with the high speed flight have received vast interests.Features of such flows like unsteadiness,intensive gradient and compressibility chal-lenge the ability of experimental methods.Nano-tracer planar laser scattering (NPLS)is a non-intrusive optic technique developed by the authors’group in 2005 ,which can visualize the tempo-ral-resolved flow structures in a cross-section of instantaneous three-dimensional supersonic flow with high spatiotemporal resolution.Many studies have demonstrated that NPLS is an effective technique for studying supersonic turbulence.In recent years,the authors have made great pro-gresses in supersonic turbulence study using NPLS.And several techniques based on NPLS have been developed,such as NPLS-based density technique (NPLS-DT),which helps to understand the density field of supersonic flows and obtain Reynolds stress distribution.This paper intro-duced NPLS technique for visualizing the fine structures of supersonic flows,and reviewed its ap-plications in supersonic boundary layer,shock/boundary layer interaction and so on.With its a-vailable application on measuring the flow static parameters such as Reynolds stress and turbulent kinetic energy,NPLS would contribute to the development of turbulence models for compressible flows .