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 effect of wave duration on the armor layer tetrapod stability was studied in the irregular wave flume, where Bretschneider spectrum may be generated attacking the breakwater.
Abstract: this research tetrapod have been utilized for breakwater cover layer or armour layer. The effect of wave duration on the armor layer tetrapod stability was studied. The models were run in the irregular wave flume, where Bretschneider spectrum may be generated attacking the breakwater. The waves were set to break before reaching the breakwater. The test was conducted until the damage level of armour layer reached more than 5 %. The result of the research showed that waves duration and the high of the wave attack affect the stability of armour layer, especially when the wave was Rayleigh distributed. The effect of waves duration reduced as more and more waves broken before reaching the structure of the breakwater
2 citations
01 Jan 1991
TL;DR: In this article, the role of long wave to local sediment transport rate is analyzed by laboratory experiments and numerical experiments, and it is concluded that the long wave component gives a important effect to the local net sand transport rate, in particular in the vicinity of shoreline.
Abstract: When irregular waves travel to the shoreline, long wave component becomes important in the surf zone. In the surf zone, sands are transported by both wave motion and turbulence due to wave breaking. The wave motion consists of variety of periods of waves from long wave to short wave. In the present study, the role of long wave to local sediment transport rate is analyzed by laboratory experiments and numerical experiments. It is concluded that the long wave component gives a important effect to the local net sand transport rate, in particular in the vicinity of shoreline.
2 citations
TL;DR: In this article, the effectiveness of Tuned Liquid Dampers (TLDs) for suppressing the dynamic response of a platform structure subjected to wave loading and to explore the applicability of TLDs for suppressing structural vibration of fixed offshore platforms is investigated.
Abstract: The objective of this study is to experimentally investigate the effectiveness of Tuned Liquid Dampers (TLDs) for suppressing the dynamic response of a platform structure subjected to wave loading and to explore the applicability of TLDs for suppressing the structural vibration of fixed offshore platforms The experimental model is scaled according to a full size platform by matching its dynamic properties Rectangular and circular TLDs of various sizes and water depths are examined The experiments were performed in a 2-D wave flume The effectiveness of TLDs is evaluated based on their response reduction By observing the performance and the behavior of TLDs through laboratory experiments, the effects of a number of parameters including container shape, container size, number of dampers, frequency ratio, mass ratio, and incident wave characteristics are investigated
2 citations
Dissertation•
01 Jan 1986
2 citations
01 Jan 2013
TL;DR: In this article, the authors extended the NEST model to simulate non-cohesive sediment transport induced by rapidly-varying transient flows, by coastal current and waves, in vegetated water bodies, and by overland flow.
Abstract: : The non-equilibrium sediment transport (NEST) modeling approach has been extended and applied in this chapter to simulate non-cohesive sediment transport induced by rapidly-varying transient flows, by coastal current and waves, in vegetated water bodies, and by overland flow. Even though different flow models are used in these cases, the sediment transport models are similar, with differences in sediment entrainment, adaptation length, and effective diffusivity. In the case of rapidly-varying transient flows, the generalized shallow water flow equations are adopted to consider interactions between flow, sediment transport and bed change. In the coastal context, the flow model adopts the phase-averaged shallow water flow equations with wave-induced radiation stresses coupled with a spectral wave transformation model, and the sediment transport model accounts for sediment entrainment and mixing (diffusion and dispersion) by currents and waves. In the case of vegetated channels, the vegetation drag and inertia forces are considered in the momentum equations and the sediment transport capacity is modified due to vegetation effect. For upland soil erosion, the overland flow is simulated using a 2-D diffusion wave model and the rill/interrill erosion due to raindrop splash and hydraulic shear is considered in the sediment entrainment. In addition, a general NEST model framework has been developed for simulating transport of cohesive/non-cohesive sediment mixtures, taking into account the effects of cohesive sediment flocculation, bed consolidation and interactions between cohesive and non-cohesive bed materials. Selected test cases demonstrate that the extended NEST models can reasonably reproduce the sediment transport and morphology evolution under these complex flow conditions.
2 citations