摘要
本文从降雨流概念出发,通过对降雨流特征量、作用力和运动方程的分析,从理论上推导出降雨流雨滴群体体积比率的物理表达式,并根据雨滴群体体积比率与雨强关系,建立了降雨流平均终速物理模型和降雨流动能物理模型。采用人工模拟降雨试验进行了参数测定。
Based on the analyses on the characteristics of rainfall and forces acting on raindrop, the physically-based expression of bulk ratio of raindrop group for rain flow is deduced. The physically-based model of mean terminal velocity and the model of rainfall flow kinetic energy are developed according to the relationship between the bulk ratio of raindrop group and rainfall intensity. The parameters of the models are obtained from the simulated rainfall experiments.
出处
《水利学报》
EI
CSCD
北大核心
2005年第11期1280-1285,共6页
Journal of Hydraulic Engineering
基金
中国科学院知识创新工程重要方向项目(KZCX3-SW-442)
中国科学院水利部水土保持研究所领域前沿专项经费资助项目(C23013200)
国家自然科学基金重点项目(40335050)
黄土高原土壤侵蚀与旱地农业国家重点实验室基金项目(10501-143)
关键词
降雨流动能
物理模型
降雨流平均终速
雨滴群体体积比率
降雨强度
rainfall flow kinetic energy
physically-based model
mean terminal velocity of rainfall flow
bulk ratio of raindrop group
rainfall intensity
