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Threshold studies of gravel size particles under the co-linear combined action of waves and currents

Panagiotopoulos, I., Sylaios, G. and Collins, M.B. (1994) Threshold studies of gravel size particles under the co-linear combined action of waves and currents Sedimentology, 41, (5), pp. 951-962.

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Gravel size sediment beds are tested under the combined influence of simulated wave action and co-linear currents in a laboratory flume. Critical current speed, at threshold, increases with increasing size. Superimposed wave energy causes a small reduction in the unidirectional current energy. For low values of wave-induced near bed current velocities, the resistance to erosion increases when the wave period decreases from 10 to 6 s. Finally, combined critical shear stresses are found to be lower than those predicted using the Shields curve, as modified for oscillatory flow. Grain protrusion is suggested as a mechanism to explain this divergence.

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Published date: October 1994


Local EPrints ID: 192445
ISSN: 0037-0746
PURE UUID: 097a282e-123b-41a6-af2b-f3a54f782747

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Date deposited: 04 Jul 2011 14:05
Last modified: 17 Oct 2017 12:46

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Author: I. Panagiotopoulos
Author: G. Sylaios
Author: M.B. Collins

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