scispace - formally typeset
Search or ask a question
Topic

Wave flume

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


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, the wave interception by a sea-balloon breakwater is analyzed numerically by three-dimensional boundary integral method, assuming that the fluid motions both in and out-side of the balloon are potential and that the tension in balloon membrane is proportional to the apparent elongation of membrane with virtual elastic constant.

3 citations

ReportDOI
30 Nov 2012
TL;DR: A cycloidal wave energy converter (CycWEC) is proposed in this article, which consists of one or more hydrofoils rotating around a central shaft, and operates fully submerged beneath the water surface.
Abstract: This program allowed further advancing the development of a novel type of wave energy converter, a Cycloidal Wave Energy Converter or CycWEC. A CycWEC consists of one or more hydrofoils rotating around a central shaft, and operates fully submerged beneath the water surface. It operates under feedback control sensing the incoming waves, and converts wave power to shaft power directly without any intermediate power take off system. Previous research consisting of numerical simulations and two dimensional small 1:300 scale wave flume experiments had indicated wave cancellation efficiencies beyond 95%. The present work was centered on construction and testing of a 1:10 scale model and conducting two testing campaigns in a three dimensional wave basin. These experiments allowed for the first time for direct measurement of electrical power generated as well as the interaction of the CycWEC in a three dimensional environment. The Atargis team successfully conducted two testing campaigns at the Texas A&M Offshore Technology Research Center and was able to demonstrate electricity generation. In addition, three dimensional wave diffraction results show the ability to achieve wave focusing, thus increasing the amount of wave power that can be extracted beyond what was expected from earlier two dimensional investigations. Numerical resultsmore » showed wave cancellation efficiencies for irregular waves to be on par with results for regular waves over a wide range of wave lengths. Using the results from previous simulations and experiments a full scale prototype was designed and its performance in a North Atlantic wave climate of average 30kW/m of wave crest was estimated. A full scale WEC with a blade span of 150m will deliver a design power of 5MW at an estimated levelized cost of energy (LCOE) in the range of 10-17 US cents per kWh. Based on the new results achieved in the 1:10 scale experiments these estimates appear conservative and the likely performance at full scale will exceed this initial performance estimates. In advancing the Technology Readiness Level (TRL) of this type of wave energy converter from 3 to 4, we find the CycWEC to exceed our initial estimates in terms of hydrodynamic performance. Once fully developed and optimized, it has the potential to not just outperform all other WEC technologies, but to also deliver power at a lower LCOE than competing conventional renewables like wind and solar. Given the large wave power resource both domestically and internationally, this technology has the potential to lead to a large improvement in our ability to produce clean electricity at affordable cost.« less

3 citations

Book ChapterDOI
01 Jan 1992
TL;DR: In this article, a computer model named "WAVE" is developed to simulate the development of coastal environments affected by wave-induced erosion, transport, and deposition, which combines wave refraction, wavecurrent interaction, wave set-up, wind, oscillatory wave motion, longshore currents, rip currents, and nearshore sediment transport.
Abstract: A computer model named “WAVE” has been developed to simulate the development of coastal environments affected by wave-induced erosion, transport, and deposition. The model simulates wave refraction, wavecurrent interaction, wave set-up, wind, oscillatory wave motion, longshore currents, rip currents, and nearshore sediment transport. Combining these processes into a unified model provides a process-response model that is dynamic in that the effects of wave energy on an evolving coastline are simulated through time. A series of equations based upon the principles of fluid dynamics as applied to coastal hydraulics, are used to calculate nearshore currents within a grid network representing a coastal area. The equations assume that mass and momentum are conserved as waves shoal towards shore, and are solved by integrating over the total water depth, and time-averaging over a single wave period. A finite-difference scheme provides solutions for the wave equations at each node in the grid. Once nearshore currents are calculated, sediment transport is initiated using empirical relationships that are effective in predicting raes of littoral transport.

3 citations

01 Mar 2013
TL;DR: In this paper, the performance of the resonance power buoy system was evaluated in a large wave flume with a regular and random plunger wave generator and a mooring buoy.
Abstract: In this study, laboratory experiments and numerical simulations were conducted to test the performance of resonance power buoy system proposed by Kweon et al.(2010). The system is composed of a linear generator and a mooring buoy. The mover of the linear generator mainly has heave motion driven by vertical oscillation of the buoy. In this system, the velocity discrepancy between the mover and the buoy makes electricity. However, ocean wave energy as a natural resource around Korean peninsula is comparatively small and the driving force for producing electricity is not enough for commercialization. Therefore, it is necessary that the buoy motion be amplified by using resonance characteristics. In order to verify the resonance effects on the test power buoy, the experimental investigations were conducted in the large wave flume (length of 110m, width of 8m, maximum depth of 6m) equipped with regular and random plunger wave generator. The resonance draft oftest power buoy is designed for the corresponding period of incident wave, 1.96 sec. Regular wave test results show that the heave response amplitude operator(RAO) by a test buoy has the amplification of 5.66 times higher compared to the wave amplitude at the resonance period. Test results of random waves show that the buoy has the largest spectrum area of 20. 73 times higher at the point of not the resonance period but the shorter one of 1.85 sec. Therefore this study suggests the resonance power buoy for wave power generation for commercial application in the case of the coastal and oceanic area with smaller wave energy.

3 citations

01 Jan 1988
TL;DR: In this paper, the numerical model TRADEF simulates morphological changes due to longshore currents induced by breaking waves, and the numerical results are compared with measurements of bed evolutions surveyed in a wave basin with movable bed for two different offshore wave conditions.
Abstract: The numerical model TRADEF simulates morphological changes due to longshore currents induced by breaking waves. The numerical results are compared with measurements of bed evolutions surveyed in a wave basin with movable bed for two different offshore wave conditions. The main features of bottom changes could be well simulated by computation for the highest offshore wave height whereas discrepancies occur for the little one. These results are discussed and improvements are proposed; introduction of a turbulence model, modification of the transport formula.

3 citations


Network Information
Related Topics (5)
Water flow
82.5K papers, 912.5K citations
76% related
Sediment
48.7K papers, 1.2M citations
74% related
Drag
43.8K papers, 769.2K citations
73% related
Sea ice
24.3K papers, 876.6K citations
73% related
Turbulence
112.1K papers, 2.7M citations
73% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202331
202284
202165
202069
201964
201859