紊动强度沿垂线分布规律的分析

Analyses on Distribution Rule of Turbulence Intensity along Depth

在现有研究的基础上 ,运用超声流速仪进行挟沙水流水槽实验 ,并结合分析激光流速仪、应变式紊动流速仪的观测结果 ,建立了纵向紊动强度与流速、流速梯度之间的定量关系。利用数值实验方法 ,分析了水流最大流速、摩阻流速及卡曼常数对紊动强度最大值出现位置的影响。

By using the flume experimental data by Micro ADV in sediment\|laden flow, and analyzing the data from LDV and Strain\|kinemometer, the quantify relationship of the turbulence intensity with the velocity and its gradient is established. Additionally, by using the numerical examination method, the affects of the factors such as the max velocity u max , the shear velocity u * , and Karman constant κ on the location of the maximum turbulence intensity along depth are analyzed.