Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
Paper (In Japanese)
Distribution of Shear Stress in Oscillatory Sheet-flow Layer by LES
Eiji HARADAHitoshi GOTOHNaoki TSURUTA
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2013 Volume 69 Issue 2 Pages I_556-I_560

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Abstract

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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© 2013 by Japan Society of Civil Engineers
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