FLOW-FREE SEDIMENT HYSTERESIS IN SEDIMENT-STRATIFIED COASTAL WATERS

Proceedings of the International Conference on Coastal Engineering

Ashish J. Mehta²  Rui G. Costa¹ 

[1] Laboratorio Nacional de Engenharia Civil;Department of Coastal and Oceanograpliic Engineering, University of Florida

关键词: sediment stratified water;    stratified water;    flow-fine sediment hysteresis;   

DOI  :  10.9753/icce.v22.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Hysteresis in the relationship between suspended sediment concentration and the flow velocity is shown to be influenced by sediment-induced flow stratification in high energy coastal environment. A 1-D numerical approach combined with field observation from Hangzhou Bay, China is used to highlight the effects of concentration dependent settling velocity, buoyancy stabilized mass diffusion and bottom sediment fluxes on hysteresis. Typical formulations for the bottom fluxes are believed to have limited utility in high concentration environments.

【 授权许可】

Unknown