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Stream power criterion and design of sand bed channels at incipient motion

Rao, Achanta Ramakrishna and Sreenivasulu, Gopu (2009) Stream power criterion and design of sand bed channels at incipient motion. In: Journal of Hydraulic Research, 47 (3). pp. 319-328.

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The critical stream power criterion may be used to describe the incipient motion of cohesionless particles of plane sediment beds. The governing equation relating ``critical stream power'' to ``shear Reynolds number'' is developed by using the present experimental data as well as the data from several other sources. Simultaneously, a resistance equation, relating the ``particle Reynolds number'' to the``shear Reynolds number'' is developed for plane sediment beds in wide channels with little or no transport. By making use of these relations, a procedure is developed to design plane sediment beds such that any two of the four design variables, including particle size, energy/friction slope, flow depth, and discharge per unit width in the channel should be known to predict the remaining two variables. Finally, a straightforward design procedure using design tables/design curves and analytical methods is presented to solve six possible design problems.

Item Type: Journal Article
Publication: Journal of Hydraulic Research
Publisher: International Association of Hydraulic Engineering and Research
Additional Information: Copyright of this article belongs to nternational Association of Hydraulic Engineering and Research.
Keywords: Alluvial channel;canal design;incipient motion; open-channel; resistance equation;sediment transport;stream power
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 06 Jan 2010 05:57
Last Modified: 06 Jan 2010 05:57
URI: http://eprints.iisc.ac.in/id/eprint/21647

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