【摘要】 介绍了自风沙动力学诞生以来所使用的各类光学测量方法,阐述了各种方法的优缺点和适用范围,针对最新光学测量技术在近代风沙两相流研究中的重要作用,着重介绍了PIV、高速数字图像测量及其图像处理技术在风沙两相流中的应用,指出光学测量在时间和空间的解析能力上的持续增长将为沙粒微观力学解析和风沙流宏观统计规律获取提供充足的支持。更多还原

【Abstract】 Based on the important role of optical measurement in wind-blown sand flow experiments,this paper reviews all kinds of optical measurement techniques from the birth of the dynamics of blown sand.The advantages,disadvantages and application range of these methods were pointed out.Then,the applications and image processing methods of latest optical measurement techniques,PIV and high-speed digital measurement,were specially introduced.It is proved that the increasing resolution ability in spatial and temporal of optical measurement will offer plenteous support on sand micro-mechanics analysis and wind-blown sand flow macro data statistic.更多还原