Wave flume

About: Wave flume is a research topic. Over the lifetime, 1627 publications have been published within this topic receiving 23335 citations.

Sheet flow and suspension under wave groups in a large wave flume (SISTEX99)

Abstract: Detailed measurements of sediment concentrations in the sheet flow layer and in the suspension layer for flat bed conditions under prototype wave groups are presented. These measurements are part of experiments on near-bed sand transport processes, carried out in the Large Wave Flume in Hannover, Germany (SISTEX99). The results show that concentrations in the sheet flow layer are highly coherent with the instantaneous near-bed velocity. In the suspension layer, however, concentrations respond much slower to changes in near-bed velocity: at some distance from the bed concentrations increase and decrease on the time scale of the wave group, with a time delay relative to the peak wave within the wave group.

About the energy dissipation over barred beach

Abstract: Since wave energy dissipation in the surf zone is a stochastic process closed mathematical formulations cannot be expected. The dissipation was computed using several analytical and/or empirical approaches and compared with prototype measurements in the Big Wave Flume (GWK) in Hannover as well as with field measurements from the west coast, of the Island of Sylt/North Sea. Generally good agreements were found for moderate energy dissipation conditions (spilling-breaker), whereas in the case of plunging breakers, however, the fitting is not solved satisfactory.

Numerical simulation on characteristics of sediment transport under strong wind and waves

Abstract: We simulate the effect of strong waves on the sediment transport at the Xiaoqing River estuary areas using the 3D model ECOMSED (Estuarine Coastal Ocean Model with sediment transport) with the wave parameters from the wave model SWAN (Simulating Waves Nearshore).The water depth,tidal current,suspended sediment and historical meteorological data are used to estimate the changes of the suspended sediment concentrations (SSC) and the bed scour and siltation (BSS) caused by strong wind and waves.We compare the simulation with the in situ data and find that the results are reliable.Results show that the sediment transport change greatly under the influence of strong wind and waves in the near-shore areas.The value of SSC is 10 times larger than that under the normal wind and wave condition.The change of BSS could be even as much as one hundred times.The result also show that the change of BSS resulting from strong wind and waves would have a great impact on the evolution of river estuary sandbars.

Experimental study on scouring and silting stability of the man-made beach in Dongjiang Harbor Area of Tianjin Port

Abstract: Experiments are carried out to study the sedimentation of the man-made beach in the east coast of Tianjin Port using the whole tidal current and sediment physical model and wave flume model.Since the coastal area of the project is a typical flow mud transfer coast,sedimentation in the intertidal zone of the hydrophilic section(about 5cm a year) is inevitable.Under the condition of sheltering,the man-made beach is basically stable under a 10-year wave.But under a 50-year wave,the deformation of the beach profile will occur,with the loss quantity in single width of about 3.3 m~3/m.

Wave boundary layer hydrodynamics during onshore bar migration

Abstract: To study onshore bar migration and the accompanying intra-wave sediment transport a wave flume experiment was conducted. The wave flume had a rigid bottom with a single bar profile. The focus of the experiment was to measure the hydrodynamics in the wave bottom boundary layer. The results show that the skewness of bottom stress is not only related to wave skewness but also to wave asymmetry.