A Joint Numerical and Experimental Study of a Surging Point Absorbing Wave Energy Converter (WRASPA)

Bhinder, Majid A.; Mingham, Clive G.; Causon, D. M.; Rahmati, Mohammad; Aggidis, George A.; Chaplin, R. V.

doi:10.1115/omae2009-79392

Cited by 34 publications

(30 citation statements)

References 8 publications

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“…A commercial computational fluid dynamics model is used instead to investigate the modifications induced by the structure under tidal currents. The model employed is Flow-3D, which has been used in numerous maritime, riverine, and aerospace studies including tidal flows (Vasquez and Walsh 2009) and modeling energy converters (Binder et al 2009). This model was also used as a tool during the original design of the Sediment Transport and Boundary Layer Equipment (STABLE) III tripod (Humphery et al 2007).…”

Section: B Modeling Current-structure Interactionmentioning

confidence: 99%

Effects of Instrumented Bottom Tripods on Process Measurements

Bolaños

Amoudry

Doyle³

2011

Journal of Atmospheric and Oceanic Technology

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The measurement and assessment of ocean bottom processes are important sources of information for understanding bedform evolution and sediment entrainment and for improving numerical models. Instrumented tripods have been used to investigate bottom boundary layer and sediment dynamics processes for several decades. In this paper, the effects of instrumented tripods on hydrodynamics and on the sea bed are investigated via numerical modeling and field data collected under moderate to strong tidal currents and mild surface waves. Under high currents, streamlines are modified and structure-induced vertical velocities are produced. To minimize this effect, a rotation of the three-dimensional current measurement under the frame is recommended. Acceleration of the flow under the frame is also significant (on the order of 10%-20%), which leads to an increase in bottom stress and can produce a large scour pit in energetic currents. Wave-structure interactions mainly increase turbulence near the frame. No significant wave effect has been observed near the bed, and scouring thus mostly relates to tidal currents.

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Section: B Modeling Current-structure Interactionmentioning

confidence: 99%

Effects of Instrumented Bottom Tripods on Process Measurements

Bolaños

Amoudry

Doyle³

2011

Journal of Atmospheric and Oceanic Technology

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“…As a vital component in full scale prototype, the effect on the ballast tank was discussed for the power performance by changing the arrangement of column mass [6]. Other shapes of the pitching collector body were also discussed by numerical and experimental study for power output in regular and irregular waves [7,8]. A series of fully 3D non-linear simulations were presents on the use of Flow-3D and numerical dissipation of waves, wave absorption and wave breaking were all discussed.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on the power output of three-degree point-absorbing wave energy converter

Ma²

2016

OCEANS 2016 - Shanghai

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Point-absorbing converters are widely applied in exploiting of the wave energy. This paper will present some results of point absorber converters by experiment measurements in regular waves. Meanwhile, the research investigates the influence of take-off damping on the power output of wave energy converter. Results demonstrate the wave energy output of three-degree wave energy device is better than result of one-degree point absorber. The parameter, take-off damping, has a significant effect on the energy output of converters. Its result indicates that the damping parameter could be adaptively adjusted in different wave states, to capture the maximum power of waves.

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“…A similar GMO model has been applied for the numerical simulation of coupled motion of solid body and waves, e.g. in Bhinder et al (2009), Dentale et al (2014, and Zhao et al (2014).…”

Section: Numerical Model Descriptionmentioning

confidence: 99%

Simulations of moving effect of coastal vegetation on tsunami damping

Tsai

Chen

Sihombing

et al. 2017

Nat. Hazards Earth Syst. Sci.

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Abstract. A coupled wave-vegetation simulation is presented for the moving effect of the coastal vegetation on tsunami wave height damping. The problem is idealized by solitary wave propagation on a group of emergent cylinders. The numerical model is based on general Reynolds-averaged Navier-Stokes equations with renormalization group turbulent closure model by using volume of fluid technique. The general moving object (GMO) model developed in computational fluid dynamics (CFD) code Flow-3D is applied to simulate the coupled motion of vegetation with wave dynamically. The damping of wave height and the turbulent kinetic energy along moving and stationary cylinders are discussed. The simulated results show that the damping of wave height and the turbulent kinetic energy by the moving cylinders are clearly less than by the stationary cylinders. The result implies that the wave decay by the coastal vegetation may be overestimated if the vegetation was represented as stationary state.

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A Joint Numerical and Experimental Study of a Surging Point Absorbing Wave Energy Converter (WRASPA)

Cited by 34 publications

References 8 publications

Effects of Instrumented Bottom Tripods on Process Measurements

Effects of Instrumented Bottom Tripods on Process Measurements

Experimental research on the power output of three-degree point-absorbing wave energy converter

Simulations of moving effect of coastal vegetation on tsunami damping

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