Topic
Wave flume
About: Wave flume is a research topic. Over the lifetime, 1627 publications have been published within this topic receiving 23335 citations.
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TL;DR: In this article, the results of experimental research carried out in the wave flume of the Water Engineering and Chemistry Department laboratory of Bari Technical University (Italy) and based on the analysis of three different regular waves breaking on a sloping bottom.
62 citations
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TL;DR: In this article, the potential for air bubble entrainment is related directly to the plunging jet impact characteristics, and the rate of energy dissipation by plunging breakers is estimated.
62 citations
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TL;DR: In this paper, the authors measured wave attenuation and water particle velocities around rigid and flexible salt marsh vegetation and found that flexible vegetation attenuates waves up to 70% less than rigid vegetation due to swaying of flexible plants.
62 citations
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01 Feb 2005TL;DR: In this paper, a series of sand bed experiments was carried out in the Large Wave Flume in Hannover, Germany as a component of the SISTEX99 experiment, focusing on the dynamic sediment response due to wave group forcing over a flat sand bed.
Abstract: A series of sand bed experiments was carried out in the Large Wave Flume in Hannover, Germany as a component of the SISTEX99 experiment. The experiments focussed on the dynamic sediment response due to wave group forcing over a flat sand bed in order to improve understanding of cross-shore sediment transport mechanisms and determine sediment concentrations, fluxes and net transport rates under these conditions. Sediment concentrations were measured within the sheet flow layer (thickness in the order of 10 grain diameters) and in the suspension region (thickness in the order of centimetres). Within the sheet flow layer, the concentrations are highly coherent with the instantaneous near-bed velocities due to each wave within the wave group. However, in the suspension layer concentrations respond much more slowly to changes in near-bed velocity. At several centimetres above the bed, the suspended sediment concentrations vary on the time scale of the wave group, with a time delay relative to the peak wave within the wave group. The thickness of the sheet flow changes with time. It is strongly coherent with the wave forcing, and is not influenced by the history or sequence of the waves within the group. The velocity of the sediment was also measured within the sheet flow layer some of the time (during the larger wave crests of the group), and the velocity of the fluid was measured at several cm above the sheet flow layer. The grain velocity and concentration estimates can be combined to estimate the sediment flux. The estimates were found to be consistent with previous measurements under monochromatic waves. Under these conditions, without any significant mean current, the sediment flux within the sheet flow layer was found to greatly exceed the sediment flux in the suspension layer. As a result, net transport rates under wave groups are similar to those under monochromatic waves.
62 citations
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TL;DR: In this article, a model for cross-shore sediment transport due to random waves is described which adopts a vertically integrated transport description for sheetflow situations, which assumes in essence that the instantaneous transport is proportional to some power of the instantaneous near-bottom velocity.
61 citations