Experimental Study on Suspended Sediment Concentration and Powder Bed Deformation under Wave-Only and Wave-With-Current Scenarios

2018 5th International Conference on Coastal and Ocean Engineering

Wu, Zhaohui^1 ; Yang, Bo^2 ; He, Yang^1 ; Huang, Fuxiang^1 ; Liang, Bingchen^2,3 ; Zhao, Dang^1

Offshore Oil Engineering Co., Ltd., Tianjin

300451, China^1

Engineering College, Ocean University of China, Qingdao, China^2

Shandong Province Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao, China^3

关键词: Geometric characteristics;    Mean flow velocities;    Sediment concentration;    Sediment waves;    Suspended sediment concentrations;    Wave conditions;    Wave current;    Wave heights;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/171/1/012001/pdf
DOI  :  10.1088/1755-1315/171/1/012001

来源: IOP

【 摘 要 】

In this paper, the suspended sediment concentration and bed geometric characteristics of powder sediment under the wave-only and wave-with-current are described. 9 experimental scenarios with the different wave height H and mean flow velocity V were investigated. It is found that under the wave condition the suspended sediment concentration S increases with the increase of wave height H, however it increases with the increase of flow velocity V under the wave-current condition. The sediment concentration in the near-bottom area is very high for both wave and wave-current condition. The sediment wave length L sw increased slightly with the increasing of the H, but it does not change much in general, while it increased with the increasing of the V. The sediment wave height H sw increased with the increasing H, and it increased firstly and then decreased with increasing V.