Dispersion process of suspended sediment in turbulent shear flow

M. Sekine

Dispersion process of suspended sediment in turbulent shear flow

M. Sekine^*

^*この研究の対応する著者

創造理工学部

研究成果: Conference contribution

抄録

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.

本文言語	English
ホスト出版物のタイトル	River, Coastal and Estuarine Morphodynamics
ホスト出版物のサブタイトル	RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
ページ	485-490
ページ数	6
出版ステータス	Published - 2008 12月 1
イベント	5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007 - Enschede, Netherlands 継続期間: 2007 9月 17 → 2007 9月 21

出版物シリーズ

名前	River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
巻	1

Conference

Conference	5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007
国/地域	Netherlands
City	Enschede
Period	07/9/17 → 07/9/21

ASJC Scopus subject areas

生態学
環境工学

他のファイルとリンク

引用スタイル

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).

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

研究成果: Conference contribution

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. River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, vol. 1, pp. 485-490, 5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007, Enschede, Netherlands, 07/9/17.

Sekine M. 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. 2008. p. 485-490. (River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics).

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

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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.",

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Dispersion process of suspended sediment in turbulent shear flow

抄録

出版物シリーズ

Conference

ASJC Scopus subject areas

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