范数理论在尾流气泡幕参数研究中的应用  

Application of norm theory in the wake bubble screen parameter study

作　　者：许瑞华[1,2] 吕沛[1] 赵娟宁[2] 

机构地区：[1]中科院西安光学精密机械研究所,陕西西安710119 [2]中国科学院大学,北京100049

出　　处：《光电子．激光》2013年第7期1380-1384,共5页Journal of Optoelectronics·Laser

摘　　要：针对目前尾流测量中只能获得一个参数的缺点,本文将范数理论应用于尾流气泡幕参数的计算。试验中,通过片光源切片成像系统拍摄尾流气泡幕图像,应用范数计算方法结合粒径信息得到气泡幕图像的粒密度、粒径分布均匀性和体密度等参数,再通过上述参数判断产生尾流的目标航体的相关信息。与传统的方法相比,范数计算方法具有所需已知量少、计算方法简单、获取信息量大和对舰船尾流的状态判断准确等优点,有望在舰船尾流气泡幕的研究取得重要的应用。Through researching the parameters of bubbly screen in the ship wake, the bubble movement characteristics can be found out. Also, the research and realization of the ship wake self-guide torpedo are based upon this characteristic. Currently, the wake research shortcomings include the measuring is corn- plex, the measured value is susceptible to be impacted by the external environment, etc. From a new point of view, the norm theory is applied to measure the parameters of the ship wake bubble. A slice imaging system based on light sheet is used to acquire the ship wake bubble screen images in the experiment. We utilize the norm algorithm and the diameter size of the bubble to acquire the bubble density, uniformity distribution and the volume density of the bubble screen. According to the above parameters, the related information of the target ship can be analyzed and judged. The norm algorithm has many advantages compared with the conventional one, such as the less known information is needed,the algorithm is sim- ple, the information obtained is informative, the judgement of the ships condition is accurate, and so on. This algorithm is expected to be used in acquiring the parameters of bubbly screen in the ship wake,and will have significant applications in the shit） wake bubble screen research,

关 键 词：尾流 范数理论 气泡幕 片光源 

分 类 号：O436[机械工程—光学工程]