Calculation Method about Vertical Distribution of Saturated Sediment Concentration Based on Exchange Equilibrium

Abstract:

Diffusion theory is the leading one which is used to study the vertical distribution of sediment concentration. And diffusion coefficient is a key parameter to determine the vertical distribution of suspended sediment. First of all, the calculation methods are introduced based on the momentum transfer theory and fluctuating velocity. According to the sediment equation of exchange equilibrium in vertical, the new expression is obtained for sediment diffusion coefficient and the vertical distribution of sediment concentration. By the flume experimental data and field data in natural river, the difference is analyzed among the different expressions.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 2287-2291
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.2287
• Online since: September 2013
• Authors: Xiao Xiang Feng, Pei Jiu Yue
• Keywords: Diffusion Coefficient, Equilibrium, Sediment, Vertical

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