Selection of Gravel‐Transport Formula for Stream Modeling
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Volume 120, Issue 5
Abstract
A method for selecting a sediment‐transport formula for mathematical modeling of a specific gravel stream is described and illustrated with an example. This method is based on the measured changes in stream morphology instead of site‐specific gravel transport data. In the approach, several transport formulas are tested based on their applicabilities in simulating stream‐channel changes. It is the working hypothesis that a sediment formula suitable for mathematical application should generate stream‐channel changes that can be substantiated by measurements. For Stony Creek in California, the Meyer‐Peter Muller, Yang, Parker, and Engelund‐Hanson formulas were tested separately. Sediment deliveries obtained using the Yang and Parker formulas are more or less similar. Simulated erosional and depositional changes are also similar and compare favorably with the measurements. The Meyer‐Peter Müller formula predicted lower transport rates while the Engelund‐Hanson formula produced higher transport rates. On the basis of the tests, the Yang formula and Parker formula were selected for Stony Creek applications.
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References
1.
Chang, H. H. (1988). Fluvial processes in river engineering. Krieger Publishing Co., Melbourne, Fla.
2.
Engelund, F., and Hansen, E. (1967). “A monograph on sediment transport in alluvial streams.” Teknisk Vorlag, Copenhagen, Denmark.
3.
Meyer‐Peter, E., and Muller, R. (1948). “Formulas for bed‐load transport.” Paper No. 2, Proc., 2nd Meeting, IAHR, IAHR, 39–64.
4.
Parker, G. (1990). “Surface‐based bedload transport relation for gravel rivers.” J. Hydr. Res., 20(4), 417–436.
5.
Yang, C. T. (1984). “Unit stream power equation for gravel.” J. Hydr. Engrg., ASCE, 110(12), 1783–1798.
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Copyright © 1994 American Society of Civil Engineers.
History
Received: Jan 15, 1993
Published online: May 1, 1994
Published in print: May 1994
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