Articles | Volume 5, issue 3
Research article
19 Jul 2017
Research article |  | 19 Jul 2017

The influence of turbulent bursting on sediment resuspension under unidirectional currents

Sarik Salim, Charitha Pattiaratchi, Rafael Tinoco, Giovanni Coco, Yasha Hetzel, Sarath Wijeratne, and Ravindra Jayaratne

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Cited articles

Aagaard, T. and Jensen, S. G.: Sediment concentration and vertical mixing under breaking waves, Mar. Geol., 336, 146–159,, 2013.
Adrian, R. J.: Hairpin vortex organization in wall turbulence, Phys. Fluids, 19, 041301,, 2007.
Bagnold, R. A.: The flow of cohesionless grains in fluids, Philos. Tr. R. Soc. S.-A, 249, 235–297, 1956.
Best, J. I. M.: On the entrainment of sediment and initiation of bed defects: insights from recent developments within turbulent boundary layer research, Sedimentology, 39, 797–811, 1992.
Biron, P. M., Robson, C., Lapointe, M. F., and Gaskin, S. J.: Comparing different methods of bed shear stress estimates in simple and complex flow fields, Earth Surf. Proc. Land., 29, 1403–1415,, 2004.
Short summary
The aim of this paper was to verify the existence of a mean critical velocity concept in terms of turbulent bursting phenomena. Laboratory experiments were undertaken in a unidirectional current flume where an acoustic Doppler velocimeter was used. Results in the laboratory conditions both above and below the measured mean critical velocity highlighted the need to re-evaluate the accuracy of a single time-averaged critical velocity for the initiation of sediment entrainment.