Two Dimensional Nonequilibrium Transport of Nonuniform Sediment

by Qiwei Han, Inst of Water Conservancy &, Hydroelectric Power Research, China,
Mingmin He, Inst of Water Conservancy &, Hydroelectric Power Research, China,
Sam S. Y. Wang, Inst of Water Conservancy &, Hydroelectric Power Research, China,



Document Type: Proceeding Paper

Part of: Sediment Transport Modeling

Abstract:

Mathematical models based on diffusion and/or diffusion convection equations have been widely applied to study sediment transport in suspension. Some of the studies were reported by C.C. Mei [1969], A.T. Hjelmfilt and C.W. Lenan, H.E. Jobson and W.W. Sayre [1970], H.Z. Sarikaya B.M. Sumer, Q.S. Zhang, B. Wilhelm and S. Walfram [1984], and Q.W. Han and M.M. He. In these models, however, different assumptions had to be made to treat the boundary conditions at the bed surface, even for the simplified case of uniform sediments. This paper presents a generalized model governed by a system of equations and boundary conditions which is capable of describing a variety of non-equilibrium transport of nonuniform sediments.

Subject Headings: Sediment transport | Two-dimensional models | Mathematical models | Fluid flow | Suspended sediment | Nonuniform flow | Boundary conditions

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