A Physically-Based Model of Channel Widening

by Stephen E. Darby, Univ of Nottingham, Nottingham, United Kingdom,
Colin R. Thorne, (Aff.M.ASCE), Univ of Nottingham, Nottingham, United Kingdom,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


The application of many existing models of river channel morphology is limited by their inability to account for bank erosion and changing channel width through time. This paper outlines the development and testing of a physically-based numerical model (Darby 1994), which simulates channel widening by solving deterministically the governing equations of flow continuity, flow resistance, conservation of flow momentum, sediment transport, bank stability and conservation of sediment mass.

Subject Headings: Sediment transport | Fluid flow | River flow | River bank stabilization | Numerical models | Flow resistance | Water conservation | Tennessee | United States

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