Development and application of molecular tagging velocimetry
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摘要: 分子标记示踪技术是用于流场显示和速度测量的一类激光诊断技术。通过分析目前常用的分子标记方法、分子标记显示方法以及数据处理方法及其研究进展,对分子标记示踪测量技术进行了较为全面的介绍;列举了OH 和NO 分子标记示踪技术在超声速流动、边界层流动及发动机尾流的测量应用实例,并对实际应用中反应流场背景干扰、测量环境的强振动和内流场测量中光学窗口的影响进行了讨论和分析。Abstract: Molecular tagging velocimetry is a kind of laser diagnostic technique for flow dis-play and velocity measurements.In this paper,the authors introduced the molecular tagging ve-locimetry in detail by analyzing the technique development of tag creating,tag displaying,and data processing.Several application examples of the velocity measurements of supersonic flow, boundary layer flow and the exhaust gas of engine using OH and NO tagging techniques were lis-ted.The problems that the molecular tagging velocimetry has encountered in industrial applica-tion,such as the background in reaction flow,the strong vibration environment and the optical windows restriction,were discussed and analyzed.
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