Study on Hydrodynamic Characteristics of Wave Turbulent Bottom Boundary Layer Using A Large-Sized Wave Flume

作     者：ZHANG Hong-qian XIE Ming-xiao ZHANG Chi LI Shao-wu ZHANG Hua-qing SUN Yu-chen ZHANG Hong-qian;XIE Ming-xiao;ZHANG Chi;LI Shao-wu;ZHANG Hua-qing;SUN Yu-chen

作者机构：State Key Laboratory of Hydraulic Engineering Simulation and SafetyTianjin UniversityTianjin 300072China Tianjin Research Institute for Water Transport EngineeringM.O.T..Tianjin 300456China State Key Laboratory of Hydrology-Water Resources and Hydraulic EngineeringHohai UniversityNanjing 210098China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2021年第35卷第5期

页      面：759-766页

核心收录：

学科分类：081505[工学-港口、海岸及近海工程] 07[理学] 0707[理学-海洋科学] 08[工学] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51779112 and 51779170) the Research Innovation Fund of Tianjin Research Institute for Water Transport Engineering(Grant No.TKS20200401) 

主　　题：large wave flume wave boundary layer hydrodynamic mechanism turbulent 

摘      要：Experimental studies were conducted in a super-large wave flume,aiming at uncovering the hydrodynamic characteristics involved in the turbulent wave boundary layer of full scale *** explicit formula of boundary layer thickness on rough turbulent flow was presented based on the measured velocity data of the present study and collected experimental data on wave boundary *** was found that the bottom wave-associated nominal stresses under the conditions of prototype scale tests suppress the vertical turbulence scattering upward over the boundary layer,which accounts for thickening of the boundary layer under wave *** effect has yet not been reported in the literatures using oscillatory U-tube or small-sized wave *** phase inconsistency in the turbulent boundary layer to the free stream velocity(velocity immediately outside the boundary layer)is within15°,which is remarkably smaller than the results from oscillatory U-tubes,as well as the larger wave flume experiment presented by Xie et al.(2021),showing that the coarser bed would further reduce the phase *** intensity of the vertical turbulent component is approximately 1/2 of the horizontal component,which has larger ratio compared with the value of 1/5 reported by previous ***,it was also found that the vertical turbulent energy was approximately 3/4 of the turbulent energy in spanwise directions(y-direction).This means that the turbulent fluctuation has similar order in all three-directions(x,y,z)in a full scale environment and highlights that the turbulent components in all the three directions should not be neglected when calculating the total turbulent energy.