Dispersion process of suspended sediment in turbulent shear flow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, numerical simulation of suspended sediment transport was conducted on the basis of an equation of motion in mass point system. LES turbulence model was introduced to simulate a coherent structure of turbulent shear flow which is composed of a series of ejection and sweep. The motion of multiple sediment particles were computed in this flow field, and their trajectories were analyzed statistically. And then a diffusion coefficient of sediment was evaluated numerically on the basis of diffusion theory by Taylor (1953). It was found that the diffusion coefficient of sediments approaches to that of turbulence as the sediments continue to move. This result coincides with the assumption of traditional analysis.

Original languageEnglish
Title of host publicationRiver, Coastal and Estuarine Morphodynamics
Subtitle of host publicationRCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
Pages485-490
Number of pages6
Publication statusPublished - 2008 Dec 1
Event5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007 - Enschede, Netherlands
Duration: 2007 Sep 172007 Sep 21

Publication series

NameRiver, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
Volume1

Conference

Conference5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007
CountryNetherlands
CityEnschede
Period07/9/1707/9/21

ASJC Scopus subject areas

  • Ecology
  • Environmental Engineering

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  • Cite this

    Sekine, M. (2008). Dispersion process of suspended sediment in turbulent shear flow. In River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics (pp. 485-490). (River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics; Vol. 1).