关于挟沙水流流速分布问题  

On velocity distribution of sediment laden flow

作　　者：黄才安[1] 梅小文[2] 

机构地区：[1]河海大学港航学院,江苏南京210098 [2]扬州大学水建学院,江苏扬州225009

出　　处：《长江科学院院报》2000年第4期15-17,共3页Journal of Changjiang River Scientific Research Institute

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。Velocity distribution of sediment laden flow is still a problem having controversial views.For further studying this problem, Einstein & 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 equations.A lot of sets of measured data have been used to verify this relationship.

关 键 词：挟沙水流 流速分布 卡门常数 尾流函数 

分 类 号：TV142.3[水利工程—水力学及河流动力学]