Authors: Debasish Pal Koeli Ghoshal
Publish Date: 2017/01/12
Volume: 17, Issue: 3, Pages: 591-613
Abstract
Here we propose a theoretical model to compute the suspended grainsize distribution in fluvial environment We derive the model based on the Reynolds averaged Navier–Stokes equation and the continuity equation of sediment phase The model includes the effects of secondary current and stratification which are the cause of complex interaction between turbulence and grainsize distribution in the sedimentladen flow Due to an immense importance of particle–particle and particleturbulence interactions near the channel bed we include their impacts in the boundary condition of the model The present model has noteworthy contribution to demonstrate the phenomena of suspended grainsize distribution in the real world Reported experimental data in literature shows well agreement with the numerical solution computed from the suggested model The better computational accuracy of the present model is ascertained when the upper bound of calculated error between observed experimental data and computed values is found to be lowest for our model in comparison to a large number of existing models developed from different mathematical viewpoints
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