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Title: Calibrating Coefficients of Emerged Vegetative Open Channel Flow
Authors: Shejule, Priya
Khuntia, Jnana Ranjan
Khatua, Kishanjit Kumar
Keywords: Open channel flow
Emergent vegetation
Drag coefficient
Bed friction
Eddy viscosity
Secondary flow coefficient
Depth-averaged velocity
Issue Date: Dec-2018
Citation: 23rd International Conference on Hydraulics, Water Resources and Coastal Engineering ( HYDRO 2018), Patna,India, 19-21 December 2018.
Abstract: Vegetation has a significant role in the river environment. It increases aesthetic value to revetments. Many experimental studies have been carried out to find flow resistance offered by vegetation in open channels. In vegetated channel, roughness coefficients are found to be vary with the cross-sections and depth of flow. This paper is about, a laboratory study carried out in emergent vegetation at Hydraulics Engineering Laboratory, NITR to analyse the outcome of vegetation. The Shiono Knight Method (SKM) has been applied to calculate depthaveraged velocity distribution and boundary shear stress distribution in an open channel flow. For this purpose, three calibrating coefficients such as bed friction (f), dimensionless eddy viscosity (λ) have been incorporated to modify the existing SKM. A mathematical model formulated to find the calibrating coefficients in the channel and also compared with SKM.
Description: Copyright of this document belongs to proceedings publisher.
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