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.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Large Eddy Simulation of a Turbulent Jet in Wave and Current Environment
Large Eddy Simulation of a Turbulent Jet in Wave and Current Environment
Author : Zhenshan Xu, Yongping Chen, Changkuan Zhang and Yana Wang
A large eddy simulation (LES) model in s coordinate is developed based on the spatially filtered Navier-Stokes equations to study the hydrodynamic behaviors of a vertical round jet in a wave and current co-existing environment. The time-averaged current profile adding a sinusoidal wave component, which accounts for the wave and current interaction, is imposed at the inflow boundary to generate the wave and current conditions, while the radiation condition combined with a sponger layer is adopted at the outflow boundary to let the waves and current leave the computational domain smoothly. The jet is numerically generated by specifying a mean jet velocity plus ?artificial turbulence? at the jet inflow boundary. The numerical results of instantaneous and mean flow fields agree well with the measurements in the prior experiments, indicating that the developed model is able to reproduce the complex flow structure of the jet in wave and current co-existing environment.
File Size : 1,516,821 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 4 - HYDRO-ENVIRONMENT
Date Published : 18/07/2016
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