流动显示技术及其现代发展概况

本文回顾了流动显示发展的历史,以及它在流体力学研究中所起的作用。根据获取流动信息的方式不同,流动显示技术可分为两大类型。作为近代技术发展的例子,三维非对称流干涉图的定量计算、片光技术、散斑照相术、激光诱导萤光法、多普勒干涉图象显示速度场、光电信号转换激光干涉仪、以及图象处理和计算机产生数字流谱技术均作了简要的介绍。

Flow Visualization and Its Recent Development

In this paper, the history of flow visualization and its function in fluid dynamics research are reviewed. The method of flow visualization can be classified in two types according to the way how the informations of the flow field are obtained. As examples of recent development; the method to reconstruct 3-D density field of a flow from a 2-D interferogram, the method of light-sheet, speckle photography, laser induced fluorescence, doppler picture for measuring veloeities, the laser intefferometer, image processing and flow visualization using computer generated color picture are described briefly.