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Bed-Load Transport Flume Experiments on Steep Slopes

Abstract : Experiments were conducted over uniform gravel bed materials to obtain 143 friction factor values under bed-load equilibrium flow conditions in an attempt to add to the scarce data available on slopes between 1 and 9% for Shields numbers between 0.08 and 0.29. Analyses showed that when only flows over flat beds are considered, a distinction must be made between flows with and without bed load. More particularly, fitting flow resistance equations indicated that the roughness parameter increases by a factor of 2.5 from clear water flow to intense bed-load transport. Between these two states, the flow resistance can be approximated by a constant for a given slope.
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Submitted on : Thursday, May 28, 2009 - 11:11:14 AM
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Alain Recking, Philippe Frey, André Paquier, Philippe Belleudy, Jean-Yves Champagne. Bed-Load Transport Flume Experiments on Steep Slopes. Journal of Hydraulic Engineering, American Society of Civil Engineers, 2008, 134 (9), pp.1302 à 1310. ⟨10.1061/(ASCE)0733-9429(2008)134:9(1302)⟩. ⟨insu-00389107⟩



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