Showing papers on "Wave flume published in 1973"

Sediment Transport in Random Waves.

Abstract: : The mechanics of sediment transport under wave action are systematically investigated. Results are then extended to a random wave field. The results apply only to regions well beyond the surf zone where the flow field, though irregular in appearance, is still amenable to mathematical expressions in gross terms. The flow field is artificially divided into two zones: the bed layer, and the internal flow region where viscosity can be neglected. The analysis is then naturally broken down into several stages: (1) The simulation of random sea condition in time and space frames with given wave spectrum; (2) The sediment concentration and transport in the bed layer under random wave; (3) The suspended load concentration and transport in the internal flow region. The total sediment transport is calculated through matching boundary conditions of the two zones and by adding the bed-load and suspended-load movements. Computer programs are developed to facilitate calculations with overwater wind speed and sediment grain size as the major inputs. (Modified author abstract)

Sediment Transport by Waves over a Flat Bed

Abstract: The sedimant transport function applicable to transport by wave action over a flat horizontal bed is discussed in the light of dimensional analysis and experimental results. It is found that an expression for sediment transport by waves may be developed by methods 'parallel' to those for unidirectional flow.