IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Numerical Simulation of Flow Diverging and Spatial Development of Horizontal Shear Layer Along the I...
Numerical Simulation of Flow Diverging and Spatial Development of Horizontal Shear Layer Along the Interface of Bank Vegetation
Author : Shuang Gao and Tadaharu Ishikawa
Quasi-3D model and SDS (sub-depth scale) turbulence model are combined to simulate the flow diverging and the horizontal shear layer development along the interface of riparian vegetation. Production terms in SDS model were modified based on previous experiments that measured the turbulence intensity in open channel flow and flow through model vegetation zone (cylinder arrays). Numerical simulations were conducted for two flume experiments with a rectangular model vegetation zone along channel bank. Good agreements were obtained for the transverse and stream-wise profiles of velocity and turbulence components in the developing shear layer containing horizontal coherent vortices. The vortex generated secondary circulation was also reproduced qualitatively. Furthermore, the simulation results suggested the secondary circulation is strong enough to influence the vertical movement of suspended sediment and the dynamic 3D flow characteristics might have significant effect on sediment deposition.
File Size : 1,202,927 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
Download Now