土木学会論文集B2(海岸工学)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
和文論文
粒子流LESによる振動流下シートフロー層の応力構造の検討
原田 英治後藤 仁志鶴田 修己
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2013 年 69 巻 2 号 p. I_556-I_560

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The components of shear stress in the oscillatory sheet-flow layer, especially concerning the inter-granular stress, are considerably unknown field because of difficulty in experimental measurements. In the present study, components of the shear stress in the oscillatory sheet-flow layer have been addressed by the LES for the particulate flow based on the Euler-Lagrange coupling. The inter-granular stress has been calculated from the solid-liquid interaction term. Then the vertical profile of each component of the shear stress has been shown in some phases. Furthermore, the predominant region for collision and contact has been found by considering both the particle concentration related to the interstitial area between particles and the turbulence intensity for particle velocity.

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