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 : 33rd Congress - Vancouver (2009) : Topic A: Advances in the Fundamentals of Water Science and Engineering : Modeling flow and transport through aquatic vegetation in natural water bodies
Modeling flow and transport through aquatic vegetation in natural water bodies
Author : Alexandra King and Edwin A. Cowen
Aquatic vegetation plays an important role in the transport and fate of nutrients and pollutants in aquatic systems. Numerical models utilizing second order turbulence closure have proven sufficient to predict momentum and solute transport through uniform canopies of rigid, emergent vegetation, but these types of turbulence models are yet to be incorporated into more applicable numerical packages accounting for three dimensional flow, density gradients, and boundary conditions appropriate for natural water bodies, where, in particular, stratification is a significant issue. We have adapted the k- turbulence model within Si3D, a 3D numerical model based on the Boussinesq form of the shallow water equations, to account for emergent aquatic vegetation. The model is calibrated against velocity and concentration measurements from a series of laboratory experiments in uniform beds of Eurasian watermilfoil and performs well, especially at lower stem densities.
File Size : 130,835 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic A: Advances in the Fundamentals of Water Science and Engineering
Date Published : 09/08/2009
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