高度对色斑法测量雨滴粒径影响的试验研究  

Experimental Study on the Height Effect on Raindrop Size in Splash Method

作　　者：李红[1] 任志远[1] 袁寿其[1] 朱兴业[1] 汤跃[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《中国农村水利水电》2006年第1期16-17,19,共3页China Rural Water and Hydropower

基　　金：国家高技术研究发展计划(2004AA2Z4010)

摘　　要：以前的色斑法雨滴率定只考虑色斑直径与雨滴真实粒径的关系,忽略了高度对率定的影响。在大量试验的基础上,通过回归分析,得到了以色斑直径和高度为变量的率定公式。研究表明,水滴下落高度小于5 m时需考虑高度的影响;高度大于5m时,高度的影响可以忽略。通过相关性分析,公式的拟合性较好,对以后的色斑法测量雨滴粒径有指导意义。Former raindrop identification of splash method only considers the relation between the splash and the raindrop diameter and neglects the influence of the dropping height. The formula, which considers both the splash diameter and dropping height, is obtained based on abundant tests and regression analysis. It is indicated that the effect of dropping height should be considered when the dropping height is less than 5 meter, while the effect may be neglected when the dropping height is more than 5 meter. By correlation analysis of the data and the calculation results, the formula inosculates the test data well. It will have guidance for the later researches on measuring raindrop size in splash method.

关 键 词：雨滴粒径 相关性分析 色斑法 回归技术 

分 类 号：S275.5[农业科学—农业水土工程]