长江科学院院报 ›› 2000, Vol. 17 ›› Issue (4): 15-17.

• 河流泥沙 • 上一篇    下一篇

关于挟沙水流流速分布问题

 黄才安, 梅小文   

  • 出版日期:2000-08-01 发布日期:2012-03-05

On velocity distribution of sedimentladen flow

 HUANG  Cai-An, MEI  Xiao-Wen   

  • Online:2000-08-01 Published:2012-03-05

摘要: 挟沙水流的流速分布是泥沙动力学中一个尚有争议 的问题,为了深入研究这一问题,对爱因斯坦和钱宁等的变k模式和Coleman模式进 行了进一步分析。发现变k模式的k值与Coleman尾流强度系数Π之间存在一一 对应的关系,并推导了这一数学关系。最后利用多组实测挟沙水流流速分布资料对这一关系 进行了验证。

关键词: 挟沙水流, 流速分布, 卡门常数, 尾流函数

Abstract: Velocity distribution of sedimentladen flow is sti ll a problem having controversial views.For further studying this problem, Einst ein & Chien's concept of the varying Karman coefficient and Coleman's opinion of wake function are reanalyzed.It is found that the Karman coefficient of varying k and wake flow strength coefficient of Coleman have a one to one relation. This mathematical relationship is derived from two velocity distribution equatio ns.A lot of sets of measured data have been used to verify this relationship. 