荧光剂探测植被群尾流区长度

摘要

采用荧光剂指示植被群尾流漩涡的运动轨迹,通过拍摄荧光剂运动轨迹视频,运用Matlab工具将视频中的荧光剂运动轨迹转化为数值分布,确定植被群尾流区长度,构建一套尾流区长度荧光探测新技术.该技术得到的结果与传统测量方法结果两者吻合良好.较传统测量方法,采用新技术探测尾流区长度具有简单、快速且准确等特点,可以极大地提高实验效率.%The fluorescer was employed to dictate the motion of wake vortices.The wake motion was captured by video.Matlab was used to transfer the fluorescer intensity in the video to the longitudinal distribution of numbers.Then,the wake length of vegetation patch was determined.The results were compared to the results from tradition measurement method.Good agreement between two methods indicates that this new technique is capable to estimate wake length.The merit of current method is simple,quick and accurate,hence,the techoinique can considerably improve the experimental efficiency.