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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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Proceedings ArticleDOI
12 Nov 2016
TL;DR: A controlled systematic test program was undertaken in a monochromatic regular wave condition represented by transmission coefficient, Ct as the reference index of breakwater's wave dissipation in the effect of water depth and incident wave height as discussed by the authors.
Abstract: Wave transmission is the coastal character resulted from interaction of incident wave and submerged breakwater. Coastal hydrodynamic parameters mainly wave period, wave height and water depth while structural geometry factor such as structural height, bottom width as well as crest width influenced magnitude of transmitted wave. A controlled systematic test program was undertaken in a monochromatic regular wave condition represented by transmission coefficient, Ct as the reference index of breakwater's wave dissipation in the effect of water depth and incident wave height which indicated high wave suppresion and capability of wave breaking and structural friction to wave motion. This submerged breakwater also an artificial reef which protect and converse marine biology as well as enhance the marine ecological environment.

4 citations

Journal ArticleDOI
TL;DR: A Navier-Stokes-based model, IH-3VOF, is applied to study the interaction of tsunami waves with porous and impermeable structures and the equations solved and their numerical implementation are presented here.
Abstract: Tsunami wave interaction with coastal regions is responsible for very important human and economic losses. In order to properly design coastal defenses against these natural catastrophes, new numerical models need to be developed that complement existing laboratory measurements and field data. The use of numerical models based on the Navier-Stokes equations appears as a reasonable approach due to their ability to evaluate complex flow patterns around coastal structures without the inherent limitations of the classical depth-averaged models. In the present study, a Navier-Stokes-based model, IH-3VOF, is applied to study the interaction of tsunami waves with porous and impermeable structures. IH-3VOF is able to simulate wave flow within the porous structures by means of the volume-averaged Reynolds-averaged Navier-Stokes (VARANS) equations. The equations solved by the model and their numerical implementation are presented here. A numerical analysis of the interaction of a tsunami wave with both an impermeable and porous vertical breakwater is carried out. The wave-induced three-dimensional wave pattern is analysed from the simulations. The role paid by the porous media is also investigated. Finally, flow around the breakwater is analyzed identifying different flow behaviors in the vicinity of the breakwater and in the far field of the structure.

4 citations

01 Jan 2015
TL;DR: In this article, a physical wave flume modeling program was undertaken with extreme cyclonic wave and water level conditions, and the resulting measured data sets used to assess the applicability of the available empirical equations for such conditions.
Abstract: During extreme events, island nations with fringing reefs have been seen to experience higher water levels and more powerful bore waves than predicted by standard theory, based on their depth-limited shallow fringing reef conditions. When considering coastal processes in fringing reef situations, coastal engineering practice currently applies empirical equations which were derived from laboratory experiments under nonstorm conditions and typically monochromatic waves, compared to extreme conditions such as tropical cyclones. Furthermore, numerical models have proven relatively poor at resolving the complex wave and water level processes in fringing reef situations. It is therefore beneficial to develop a better understanding of coastal processes for fringing reefs during extreme conditions, and to develop improved empirical predictive methods. Within this investigation, a physical wave flume modelling program was undertaken with extreme cyclonic wave and water level conditions, and the resulting measured data sets used to assess the applicability of the available empirical equations for such conditions. Two dimensional wave flume modelling was performed for three reef profiles representing the envelope of reef and lagoon widths that occur on the north coast of Rarotonga in the Cook Islands. Tests were conducted for storm conditions that represented a documented historical cyclone, a 100 year Average Recurrence Interval event, as well as projected sea level rise. Comparison of new laboratory results tested with extreme conditions against previously reported results indicate that existing empirical equations typically over-predict wave setup and under-predict surf beat and extreme water levels during extreme events. Nearshore wave heights can also be largely underestimated with existing empirical relationships, in particular for locations with only a narrow fringing reef. New best-fit curves are presented and are suggested as suitable tools for making preliminary estimates of wave and water level conditions for fringing reefs during extreme events.

4 citations

27 Jul 2015
TL;DR: In this article, a wave flume experiment was conducted to examine the processes of sandy beach profile evolution under regular waves and the impacts of various wave conditions on quartz sand were discussed.
Abstract: An experiment was conducted in a wave flume to examine the processes of sandy beach profile evolution under regular waves. The impacts of various wave conditions on quartz sand were discussed. Every case was initiated with one constant slope. Beach profile evolution was measured by remote video camera technique and bathymetry data collected from the laser total station was used to calibration. The results of a number of cases were discussed and video technique performed well in monitoring time series beach profile evolution.

4 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202331
202284
202165
202069
201964
201859