水利学报2012，Vol.43Issue(12)：1387-1396,10.
泥沙起动流速的统一公式
A unified formula for incipient velocity of sediment
摘要
Abstract
Based on analysis of previous sediment incipient velocity formulae, this paper established an expression form for the adhesive force among the sediment particles and additional downforce caused by the water depth through theoretical discussion, introduced Zhang Hongwu's velocity distribution formula based on mixing length model with eddy mode, and then the undetermined coefficient in formula has been determined in view of the same important influence on incipient motion by both adhesive force and additional downforce caused by the water depth and the eigen value of natural river sediment movement, The unified formula for incipient velocity of sediment theoretically established, which can not only summarize the thickness of the sand, but also reflect the effect of bed resistance and sediment concentration and water temperature on sediment incipient motion, and it is applicable in light sand.关键词
泥沙/起动流速/河床摩阻/统一公式Key words
sediment/incipient velocity/bed resistance/unified formula分类
建筑与水利引用本文复制引用
张红武..泥沙起动流速的统一公式[J].水利学报,2012,43(12):1387-1396,10.基金项目
国家自然科学基金重点项目 （）
