土木学会論文集B2(海岸工学)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
粒子流LESによる振動流下シートフロー層のレオロジーの位相特性の検討
原田 英治後藤 仁志鶴田 修己
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2012 年 68 巻 2 号 p. I_501-I_505

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Large eddy simulation for granular-fluid in sheet-flow regime under oscillatory flow has been performed by using the solid-liquid two-phase flow model based on the Euler-Lagrange coupling. Rheological characteristics of sheet-flow layer where frequent inter-granular collisions occur has been investigated computationally. The simulated particle system is verified by comparison with the previous experimental results. Then the transitional area in the sheet-flow layer satisfying Bagnold's law is highlighted. And active inter-granular collisions are found by decreasing of the period of oscillation under the same bottom shear stress condition.

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