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 : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Mathematical modelling of bed shear stress and depth averaged velocity for emergent vegetation on fl...
Mathematical modelling of bed shear stress and depth averaged velocity for emergent vegetation on floodplain in compound channel
Author : SHIONO, K(1) AND RAMESHWARAN, P(2)
ABSTRACT
A mathematical model is used to predict velocity and bed shear stress in a compound channel flow. Model parameters
such as non-dimensional eddy viscosity and secondary flow term in the mathematical model based on Shiono and
Knight Method (SKM) are reconsidered using the UK-FCF data. The turbulent shear stresses obtained by three
turbulence models are compared with those in the FCF data and the results are no significant differences between them.
The concept of the secondary flow in the SKM is redundant through the data analysis as a result a new one is introduced
in representing the shear stress in the momentum equation. The shear stress is now expressed by three mechanisms of
momentum transfer between the main channel and the floodplain. The analytical solutions to the SKM are used to
predict velocity and bed shear stress with the new concept of the shear stress. An effect of various parameters in the
SKM to the distributions of velocity and bed shear stress is also investigated.
File Size : 1,045,888 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 13/08/2015
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