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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/11284

Title: CFD modelling of meandering channel during floods
Authors: Shukla, Deepak R.
Shiono, Koji
Keywords: Floods and floodworks
Hydraulics and hydrodynamics
Mathematical modelling
Issue Date: 2008
Publisher: © Thomas Telford Ltd.
Citation: SHUKLA, D.R. and SHIONO, K., 2008. CFD modelling of meandering channel during floods. Proceedings of the Institution of Civil Engineers - Water Management, 161 (1), pp. 1 - 12.
Abstract: The three-dimensional Reynolds-averaged Navier–Stokes (RANS) and continuity equations are solved using a standard computational fluid dynamics (CFD) solver to predict flow in a compound meandering channel. High-quality experimental data from the UK Flood Channel Facility (FCF) are used to validate the computational results. The flow velocities, free-surface elevation, bed shear stress and turbulent kinetic energy are predicted reasonably well. The measured and predicted flows are analysed qualitatively and quantitatively to improve further understanding of mean flow, turbulence and secondary flow structures in a compound meandering channel. The streamwise component of the mean vorticity equation is used to quantify the behaviour of secondary flow circulations in terms of their generation, development and decay along the meandering channel. The turbulent kinetic energy equation is used to understand energy expenditure mechanisms of secondary flow circulations. The numerical results show that one of the shear stresses significantly contributes towards the generation of the streamwise vortex and the production rate of turbulent kinetic energy.
Description: This article was published in the journal, Proceedings of the ICE - Water Management [© Thomas Telford Ltd.] and the definitive version is available at: http://dx.doi.org/10.1680/wama.2008.161.1.1 The journal's homepage is at: http://www.icevirtuallibrary.com/content/serial/wama and permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.
Version: Published
DOI: 10.1680/wama.2008.161.1.1
URI: https://dspace.lboro.ac.uk/2134/11284
Publisher Link: http://dx.doi.org/10.1680/wama.2008.161.1.1
ISSN: 1741-7589
Appears in Collections:Published Articles (Civil and Building Engineering)

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