Indexed by:期刊论文

Date of Publication:2003-06-01

Journal:Journal of Hydrodynamics

Included Journals:Scopus、EI

Volume:15

Issue:3

Page Number:35-43

ISSN No.:10016058

Key Words:Computer simulation; Drag; Open channel flow; Three dimensional; Vegetation, Free surface turbulent flow; Large eddy simulation; Submerged vegetation domain, Turbulent flow

Abstract:A three-dimensional Large Eddy Simulation (LES) has been performed of hydrodynamic behavior of turbulent flow in open channel that the lower part of the domain is occupied by a drag force layer to represent vegetation. One equation model is used to closing the resolvable scale equations. The turbulent characteristic length is parameterized by a k-l model. A phenomenal model is employed to express the performance of vegetation in the open channel. The result reveals that the present model has the capacity of describing three-dimensional structure of large eddy appearing in turbulent flow in open channel with vegetation region and has the capacity of tracing the development of large eddies.