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Vertical Transport of Fine-Grained Sediments in Suspensions

by Allen M. Teeter, US Army Engineering, Waterways, Experiment Station, Estuaries Div, Vicksburg, MS, USA,



Document Type: Proceeding Paper

Part of: Hydraulics and Hydrology in the Small Computer Age

Abstract:

Numerical-model sensitivity studies were made to determine the effect of bed flux on the vertical distribution of fine-grained material suspended in turbulent flow. The transport equation was solved for the vertical dimension using orthogonal collocation. Simulations were run on a micro-computer using a Runge-Kutta integrator. Nondimensional results were used to generate nomograms and algebraic expressions for the relationships between suspension stratification and Peclet number for a range of bed fluxes ranging from free-settling to erosional. A relationship was also found between near-bed and depth-mean concentrations, Peclet number and deposition probability.

Subject Headings: Turbulent flow | Sediment transport | Fluid flow | Water supply systems | Sensitivity analysis | Bed materials | Water flow

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