Bed‐Form Development
Publication: Journal of Hydraulic Engineering
Volume 120, Issue 5
Abstract
Based upon the results of a series of 47 bed‐development experiments, the evolution of bed features subsequent to their initial generation from flat bed conditions is examined. For each such experiment, bed profiles were measured at frequent time intervals as sand‐wave configurations developed under the action of open‐channel water flow. The two sediments used for these experiments were of geometric mean size 0.20 mm and 0.82 mm, respectively. In line with the bed‐form unification model of bed development postulated by Saudkivi and Witte in 1990, the principle of bed‐form propagation speed decreasing with increasing bed‐form height and the mechanisms of bed‐form coalescence and bed‐form throughpassing are all found to be central to bed evolution processes. A quantitative relation between bed‐form speed and bed‐form height is presented. Bed‐development predictions based upon bed‐form unification models can be seen to clearly parallel the present experimental results. Stability analyses based upon potential flow theory, while not adequately describing the mechanics of bed‐form development, nevertheless correctly predict the periods of accelerated growth recorded for the present experiments.
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References
1.
ASCE Task Force on Bed Forms in Alluvial Channels of the Committee on Sedimentation. (1966). “Nomenclature for bed forms in alluvial channels.” J. Hyd. Div., 92(3), 51–64.
2.
Bendat, J. S., and Piersol, A. G. (1971). Random data: analysis and measurement procedures. John Wiley and Sons, Inc., New York, N.Y.
3.
Coleman, S. E. (1991). “The mechanics of alluvial stream bed forms,” PhD thesis University of Auckland, Auckland, New Zealand.
4.
Crickmore, M. J. (1970). “Effect of flume width on bed‐form characteristics.” J. Hyd. Div., ASCE, 96(2), 473–496.
5.
Engelund, F. A., and Fredsøe, J. (1971). “A mathematical model of flow over dunes.” Prog. Rep. 22, Inst. of Hydrodynamics and Hydr. Engrg., ISVA, Tech. Univ. of Denmark, Lyngby, Denmark, 25–30.
6.
Engelund, F. A., and Fredsøe, J. (1982). “Sediment ripples and dunes.” Ann. Rev. Fluid Mech., 14, 13–37.
7.
Ertel, H. (1965). “Kinematik und dynamik formbeständig wandernder transversal‐dünen.” Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin, 8(10), 713–717 (in German).
8.
Führböter, A. (1983). “Zur bildung von makroskopischen ordnungsstrukturen (strömungsriffel und dünen) aus sehr kleinen zufallsstörungen.” Mitteilungen des Leichtweiss‐Instituts, Tech. Univ. of Braunschweig, Braunschweig, Germany, Vol. 79, 1–51 (in German).
9.
Jain, S. C., and Kennedy, J. F. (1971). “The growth of sand waves.” Proc., Int. Symp. on Stochastic Hydr., Pittsburgh University Press, Pittsburgh, Pa., 449–471.
10.
Jain, S. C., and Kennedy, J. F. (1974). “The spectral evolution of sedimentary bed forms.” J. Fluid Mech., 63(part 2), 301–314.
11.
Jenkins, G. M., and Watts, D. G. (1968). Spectral analysis and its applications. Series in Time Series Analysis, Holden‐Day, Inc., San Francisco, Calif.
12.
Kennedy, J. F. (1969). “The formation of sediment ripples, dunes and antidunes.” Ann. Rev. Fluid Mech., 1, 147–168.
13.
Kennedy, J. F. (1980). “Bed forms in alluvial streams: some views on current understanding and identification of unresolved problems.” Application of stochastic processes in sediment transport. H. W. Shen and H. Kikkawa, eds., Water Resources Publications, Littleton, Colo. 6a/1–6a/13.
14.
Moshagen, H. (1984). “Sand waves in free surface flow—a study with emphasis on hydrodynamic aspects,” PhD thesis Norwegian Institute of Technology, at Trondheim, Norway.
15.
Nakagawa, H., and Tsujimoto, T. (1984). “Spectral analysis of sand bed instability.” J. Hyd. Engrg., ASCE, 110(4), 467–483.
16.
Plate, E. (1967). “Discussion of ‘Spectral analysis of sand waves,’ by C. F. Nordin and J. H. Algert.” J. Hyd. Div., ASCE, 93(4), 310–316.
17.
Plate, E. (1971). “Limitations of spectral analysis in the study of wind‐generated water surface waves.” Proc., Int. Symp. on Stochastic Hydr., Pittsburgh University Press, Pittsburgh, Pa., 522–539.
18.
Raichlen, F., and Kennedy, J. F. (1965). “The growth of sediment bed forms from an initially flattened bed.” Proc., 11th Cong. Int. Assn. for Hyd. Res., Leningrad, U.S.S.R., Vol. 3, Paper 3.7.
19.
Raudkivi, A. J. (1990). Loose Boundary Hydraulics. 3rd Ed., Pergamon Press, Inc., New York, N.Y.
20.
Raudkivi, A. J., and Witte, H. H. (1990). “Development of bed features.” J. Hyd. Engrg., ASCE, 116(9), 1063–1079.
21.
Richards, K. J. (1980). “The formation of ripples and dunes on an erodible bed.” J. Fluid Mech., 99 (part 3), 597–618.
22.
Sumer, B. M., and Bakioglu, M. (1984). “On the formation of ripples on an erodible bed.” J. Fluid Mech., 144(July), 177–190.
23.
Yalin, M. S. (1992). River mechanics. Pergamon Press, Inc., New York, N.Y.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 120 • Issue 5 • May 1994
Pages: 544 - 560
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Nov 17, 1992
Published online: May 1, 1994
Published in print: May 1994
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