River‐Bed Profiles with Imposed Sediment Load
Publication: Journal of Hydraulic Engineering
Volume 112, Issue 4
Abstract
The rate and extent of bed aggradation resulting from sediment overloading are determined by means of computer‐based numerical experiments. A nondimensional momentum equation, along with continuity equations for water and sediment of unsteady flow for a wide, prismatic channel, are solved numerically using recently developed relations for sediment discharge and friction factor. Numerical experiments are executed for a range of values of nondimensional input data. Principal dependent variables, such as changes in bed levels from equilibrium levels and the length of aggradation, determined from the computer experiments are correlated by multiple linear regression analysis to the independent nondimensional variables. Numerical results show that the sediment diffusion coefficient is a function of the rate of sediment overloading. The agreement between the numerical results and the available experimental data is satisfactory.
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References
1.
Cunge, J. A., and Perdreau, N., “Mobile Bed Fluvial Mathematical Models,” La Houille Blanche, No. 7, 1973, pp. 561–580.
2.
Cunge, J. A., Holly, F. M., Jr., and Verwey, A., “Solution Techniques and Their Evaluation,” Practical Aspects of Computational River Hydraulics, 1st ed., Pitman Press, London, Great Britain, 1980.
3.
de Vries, M., “River‐Bed Variations—Aggradation and Degradation,” Delft Hydraulics laboratory Publication No. 107, Delft, The Netherlands, 1973.
4.
Garde, R. J., Ranga Raju, K. G., and Mehta, P. J., “Bed Level Variations in Aggrading Alluvial Streams,” Proceedings of the 19th IAHR Congress, IAHR, Vol. 2, 1981, pp. 247–253.
5.
Jain, S. C., “River Bed Aggradation Due to Overloading,” Journal of the Hydraulics Division, ASCE, Vol. 107, No. HY1, Jan., 1981, pp. 120–124.
6.
Jaramillo, W. F., “Aggradation and Degradation of Alluvial‐Channel Beds thesis presented to the Univ. of Iowa, at Iowa City, IA, in 1983, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
7.
Jaramillo, W. F., and Jain, S. C., “Characteristic Parameters of Nonequiiib‐rium Processes in Alluvial Channels of Finite Length,” Water Resources Research, Vol. 19, No. 4, Aug., 1983, pp. 952–958.
8.
Jaramillo, W. F., and Jain, S. C., “Aggradation and Degradation of Alluvial‐Channel Beds,” Journal of Hydraulic Engineering, ASCE, Vol. 109, No. 8, Aug., 1984, pp. 1072–1085.
9.
Karim, F., “Computer‐Based Predictors for Sediment Discharge and Friction Factor of Alluvial Streams,” thesis presented to the Univ. of Iowa, at Iowa City, IA, in 1981, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
10.
Ponce, V. M., Garcia, J. L., and Simons, D. B., “Modeling Alluvial Channel Bed Transcients,” Journal of the Hydraulics Division, ASCE, Vol. 105, No. HY3, Mar., 1979, pp. 245–256.
11.
Sayre, W. W., and Kennedy, J. F., “Degradation and Aggradation of the Missouri River,” Iowa Institute of Hydraulic Research Report No. 215, The Univ. of Iowa, Iowa City, IA, 1978.
12.
Soni, J. P., Garde, R. J., and Ranga Raju, K. G., “Aggradation in Streams Due to Overloading,” Journal of the Hydraulics Division, ASCE, Vol. 106, No. HY1, Jan., 1980, pp. 117–132.
13.
Vanoni, V. A., Ed., Sedimentation Engineering, ASCE—Manuals and Reports on Engineering Practice No. 54, ASCE, New York, NY, 1975, 96 pp.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 112 • Issue 4 • April 1986
Pages: 267 - 280
Copyright
Copyright © 1986 ASCE.
History
Published online: Apr 1, 1986
Published in print: Apr 1986
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