Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
Numerical Simulation of Vertical Sorting in Sheetflow Regime by 3D Solid-Liquid Two-phase Turbulent Flow Model
Eiji HARADAHitoshi GOTOHNaoki TSURUTA
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2010 Volume 66 Issue 1 Pages 411-415

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Abstract

Sediment sorting plays an important role in a beach morphological process. A granular material model is an effective tool to investigate mechanism of vertical sorting in a sheetflow layer, because a physical experiment in a sheetflow layer is quite difficult due to a high sediment concentration. In the present study, to simulate particulate flow in a sheetflow layer with a high resolution, the filtered incompressible Newtonian viscous fluid equation, having multiphase flow formulation based on the CIP-CUP method, is coupled with both DEM as a particle dynamics model and SSM as a turbulent flow model. Then, the proposed model is applied to a vertical sorting in a sheetflow layer to predict its internal structure from a viewpoint of computational mechanics.

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© 2010 Japan Society of Civil Engineers
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