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) FULL PAPERS : THEME 2- HYDRO-ENVIRONMENT : TURBULENCE INTENSITY IN OPEN-CHANNEL FLOWS WITH SUBMERGED FLEXIBLE VEGETATION
TURBULENCE INTENSITY IN OPEN-CHANNEL FLOWS WITH SUBMERGED FLEXIBLE VEGETATION
Author : NINA NIKORA , VLADIMIR NIKORA
A number of empirical and semi-empirical models for vertical profiles of turbulence intensities in smooth- and rough-bed flows, such as gravel-bed rivers, have been developed in recent years. However, no models describing turbulence intensity profiles in vegetated channels have yet been proposed. This paper presents a new multi-segment approach used to model turbulence intensities in vegetated channels. Within this framework, different concepts are applied to specific flow regions and the overall turbulence intensity profile is represented with a set of linked segments. As a result, a set of turbulence intensity models for flow regions within and above the vegetation canopy are given. The models have been tested using extensive laboratory experiments covering wide ranges of background flow and vegetation parameters. The analysis also focused on identification of the effects of flow and roughness parameters on the model coefficients and overall performance.
File Size : 1,117,390 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 2- HYDRO-ENVIRONMENT
Date Published : 18/04/2016
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