【摘要】 <正> 脉冲激光散斑法测量流体参数是一门新技术,它不干扰流场,一次记录可同时得到全场各点的瞬时速度或密度分布,时空分辨率高,并可与计算机图象处理技术结合进行各种处理,用此法对不匀速水流及超音速气流进行测量,得到全场各点瞬时速度及密度更多还原

【Abstract】 Laser speckle technique is a new method for flow measurement. It can simultaneously measure the distribution of velocity or density on any place of whole flow field. Various processings are achieved with digit image processing system. The velocity vectors of water flow and the density vectors of supersonic flow was instantaneously obtained on any place with this method. It could be very useful for the measurement of turbulence, vortex and unsteady flow.更多还原