Numerical Simulation of Sheetflow as Granular Material
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 123, Issue 6
Abstract
In the sheetflow regime, the concentration of the sediment is so high that particle/particle interaction plays an important role. In this study, a numerical simulation of the sediment transport in the sheetflow regime is performed on the basis of the Distinct Element Method (DEM) with a focus on particle/particle interaction. The characteristics of the vertical velocity profile of sediment particles in the sheetflow regime, which were reported in previous experiments, are reproduced well by the present simulation. Furthermore, the mechanism to determine the velocity profile of the sediment particles is clarified from the viewpoint of the granular material dynamics. Finally, the half-cycle averaged sediment transport rate under an action of sinusoidal oscillating flow is estimated from the result of the simulation under the quasi-steady assumption and is compared with the result of previous experiments.
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References
1.
Ahilan, R. V., and Sleath, J. F. A.(1987). “Sediment transport in oscillatory flow over flat beds.”J. Hydr. Engrg., ASCE, 113(3), 308–322.
2.
Asano, T. (1990). “Two-phase flow model on oscillatory sheet flow.”Proc., 22nd ICCE, 2372–2384.
3.
Asano, T., and Kawata, K. (1988). “Energy dissipation of oscillatory flow over movable bed.”Proc., 35th Japanese Conf. on Coast. Engrg., JSCE, 302–306 (in Japanese).
4.
Asano, T., and Tsutsui, S. (1990). “Sediment particle motion under an oscillatory sheet flow.”Proc., Coastal Engrg., JSCE, 37, 244–248 (in Japanese).
5.
Asano, T., Nakano, Y., and Tamai, K. (1993). “Sediment transport rule under an oscillatory sheet flow.”Proc., Coastal Engrg., JSCE, 40, 336–340 (in Japanese).
6.
Bakker, W. T., and van Kesteren, W. G. M. (1986). “The dynamics of oscillatory sheetflow.”Proc., 20th ICCE, 940–954.
7.
Campbell, C. S., and Brennen, C. E.(1985). “Chute flows of granular material: Some computer simulations.”J. Appl. Mech., 52, 172–178.
8.
Cundall, P. A., and Strack, O. D. L.(1979). “A discrete numerical model for granular assembles.”Geotechnique, London, U.K., 29(1), 47–65.
9.
Drake, T. G., Shreve, R. L., Dietrich, W. E., Whiting, P. J., and Leopold, L. B.(1988). “Bedload transport of fine gravel observed by motion-picture photography.”J. Fluid Mech., Cambridge, U.K., 192, 193–217.
10.
Gotoh, H., Tsujimoto, T., and Nakagawa, H. (1993). “Numerical model of granular material for the dynamics of bed-load layer.”Proc., IAHR Congr., B-1-4, 33–40.
11.
Gotoh, H., Tsujimoto, T., and Nakagawa, H. (1994). “Numerical model of interphase momentum transfer and interparticle collision in bed-load layer.”Proc., APD-IAHR, 565–572.
12.
Haff, P. K., and Anderson, R. S.(1993). “Grain scale simulation of loose sedimentary beds: The example of grain-bed impacts in aeolian saltation.”Sedimentology, 40, 175–198.
13.
Katori, S., Watanabe, A., and Horikawa, K. (1980). “Laboratory study on sediment movement in the sheet flow regime.”Proc., 27th Japanese Conf. on Coast. Engrg., 202–206 (in Japanese).
14.
Kitou, K., Hirano, M., and Hashimoto, H. (1993). “Characteristics of granular flow in an inclined open channel.”Proc., Hydr. Engrg., 37, 617–622 (in Japanese).
15.
Kobayashi, N., and Seo, S. N.(1985). “Fluid and sediment interaction over a plane bed.”J. Hydr. Engrg., ASCE, 111(6), 903–921.
16.
Madsen, O. S., and Grant, W. D. (1976). “Sediment transport in the coastal environment.”Rep. No. 209, Ralph M. Parsons Lab., Mass. Inst. of Technol., Cambridge, Mass.
17.
Meyer-Peter, E., and Müller, R. (1984). “Formula of bed-load transport.”Proc., 2nd IAHR Congr., 39–64.
18.
Sawamoto, M., and Yamashita, T.(1986). “Sediment transport rate due to wave action.”J. Hydrosci. and Hydr. Engrg., 4(1), 1–15.
19.
Wiberg, P. L., and Smith, J. D.(1989). “Model for calculating bed load transport of sediment.”J. Hydr. Engrg., ASCE, 115(1), 101–123.
20.
Yamashita, T., Hibi, Y., and Terashima, T. (1988). “Mechanism and net rate of sediment transport in sheet flow regime.”Proc., 35th Japanese Conf. on Coast. Engrg., 297–310 (in Japanese).
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 123 • Issue 6 • November 1997
Pages: 329 - 336
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Nov 1, 1997
Published in print: Nov 1997
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