APPLICATION OF LES-STOCHASTIC TWO-WAY MODEL TO TWO-PHASE BOUNDARY LAYER FLOWS

Yasunori Watanabe; Yuta Mitobe; Yasuo Niida; Ayumi Saruwatari

doi:10.9753/icce.v32.waves.5

No. 32 (2010), Waves

No. 32 (2010)

APPLICATION OF LES-STOCHASTIC TWO-WAY MODEL TO TWO-PHASE BOUNDARY LAYER FLOWS

Waves

https://doi.org/10.9753/icce.v32.waves.5

Published 2011-01-27

Yasunori Watanabe⁺⁻
Yuta Mitobe⁺⁻
Yasuo Niida⁺⁻
Ayumi Saruwatari⁺⁻

Yasunori Watanabe

Hokkaido University

Yuta Mitobe

Hokkaido University

Yasuo Niida

Hokkaido University

Ayumi Saruwatari

Hokkaido University

Proceedings of the 32nd International Conference

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Keywords

wave boundary layer
particle-fluid two-phase flow
large eddy simulation

How to Cite

Watanabe, Y., Mitobe, Y., Niida, Y., & Saruwatari, A. (2011). APPLICATION OF LES-STOCHASTIC TWO-WAY MODEL TO TWO-PHASE BOUNDARY LAYER FLOWS. Coastal Engineering Proceedings, 1(32), waves.5. https://doi.org/10.9753/icce.v32.waves.5

Abstract

A particle / turbulence two-way coupling model, integrated with conventional stochastic and sub-grid stress models of three-dimensional Large Eddy Simulation (LES), has been applied to the particle-laden turbulent flow in a wave boundary layer developed over seabed with the aim to understand dynamic effects of the particle size and number density to the suspension process in shearing flow over the seabed. While the particle size affects local velocity fluctuations, the particle population significantly induces secondary large-scale flows varying over a scale of the wavelength, and intensifies the turbulent energy near the bed. The particle-induced turbulence may result in additional suspension from the bed, causing a recursive suspension process via the particle turbulence interaction in the boundary layer.

https://doi.org/10.9753/icce.v32.waves.5

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References

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APPLICATION OF LES-STOCHASTIC TWO-WAY MODEL TO TWO-PHASE BOUNDARY LAYER FLOWS

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