Wave flume

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

Capture Width Study on a Pendulum Wave Energy Converter

Abstract: Energy absorption by a device in forms of a pendulum plate is analyzed in this paper. A 1/10 scale model of the prototype is constructed and tested under various of wave conditions in a wave flume. Moreover, capture width is studied experimentally as a prevalent physical. The results are compared with several other types of wave energy converters, and it is indicated that the performance of the device here is preferable. Discussions on capture width ratio of the device are also illustrated briefly. Meantime the negative effects of wave breaking on the energy extraction are mentioned.

Study Based on FLUENT of Broken Internal Waves in Different Slope Angles

Abstract: Internal waves will break in the process of communication, the broken will make water in upper and lower mixing, which has significant influence on the hydrodynamic and layered characteristics of density stratification of the water. In order to reveal the propagation of internal solitary waves, a 3d numerical wave flume was built. The research of the propagation of internal solitary waves in the regular topography and broken on slopes was based on FLUENT. Comparing the fragmentation degree of different slope angle and researching the energy dissipation of the wave propagation process , which are supposed to successfully match the results with the experiment results, can provide new methods and means for the further study of internal wave breaking characteristics and the improvement of ecological environment of water bodies.

Experimental and numerical study on current velocities and vertical profiles of undertow over a submerged breakwater

Abstract: This study focuses on better understandings and acc urate predictions of the breaking and broken waves and associated undertow profiles especially over a submerged breakwater. Laboratory experiments are first performed in a 2D wave flume over 1:30 sloping beach with a submerged breakwater to capture the wave deformation, time-varying current velocities and vertical profiles of time-averaged u ndertow velocities. A newly developed numerical model is then tested against the experime ntal data sets. In contrast to the existing models, the present model accounts for mas s conservation equations for determinations of the vertical profiles of undertow shear velocities. Furthermore, the model also introduces modified time-varying formulation of turbulent mixing length scale for turbulence closure scheme. While the labo ratory experiments reveal the complex wave deformations and associated undertow properties around the submerged breakwater, the present model shows excellent predi ctive capabilities for simulation of the current fields under breaking and broken waves.

High-resolution, large-scale laboratory measurements of a sandy beach and dynamic cobble berm revetment

Abstract: High quality laboratory measurements of nearshore waves and morphology change at, or near prototype-scale are essential to support new understanding of coastal processes and enable the development and validation of predictive models. The DynaRev experiment was completed at the GWK large wave flume over 8 weeks during 2017 to investigate the response of a sandy beach to water level rise and varying wave conditions with and without a dynamic cobble berm revetment, as well as the resilience of the revetment itself. A large array of instrumentation was used throughout the experiment to capture: (1) wave transformation from intermediate water depths to the runup limit at high spatio-temporal resolution, (2) beach profile change including wave-by-wave changes in the swash zone, (3) detailed hydro and morphodynamic measurements around a developing and a translating sandbar.