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Effects of turbine damping on performance of an impulse turbine for wave energy conversion under different sea conditions using numerical simulation techniques

Thakker, Ajit; Usmani, Zia; Dhanasekaran, T.S - In: Renewable Energy 29 (2004) 14, pp. 2133-2151

This paper presents the work carried out to predict the behavior of a 0.6 m impulse turbine with fixed guide vanes with 0.6 hub to tip (H/T) ratio under real sea conditions.This enhances the earlier work done by authors on the subject by including the effects of damping applied by the turbine....

Persistent link: https://www.econbiz.de/10010804413

Computed effects of tip clearance on performance of impulse turbine for wave energy conversion

Thakker, A.; Dhanasekaran, T.S. - In: Renewable Energy 29 (2004) 4, pp. 529-547

This paper depicts numerical analysis on Impulse turbine with fixed guide vanes for wave energy conversion. From the previous investigations, it is found that one of the reasons for the mismatch between computed and experimental data is due to neglecting tip clearance ef fect. Hence, a 3-D model...

Persistent link: https://www.econbiz.de/10010804546

A novel radial self-rectifying air turbine for use in wave energy converters

Falcão, A.F.O.; Gato, L.M.C.; Nunes, E.P.A.S. - In: Renewable Energy 50 (2013) C, pp. 289-298

preliminary design tool for the turbine geometry. More detailed numerical results are then obtained with the aid of a commercial …

Persistent link: https://www.econbiz.de/10010806136

A twin unidirectional impulse turbine topology for OWC based wave energy plants

Jayashankar, V.; Anand, S.; Geetha, T.; Santhakumar, S.; … - In: Renewable Energy 34 (2009) 3, pp. 692-698

Experimental results from near shore bottom standing OWC based wave energy plants in Japan and India have now been available for about a decade. Historically the weakest link in the conversion efficiency of OWC based wave energy plants built so far has been the bidirectional turbine. This is...

Persistent link: https://www.econbiz.de/10010807027

Computational fluid dynamics analysis of a 0.6m, 0.6 hub-to-tip ratio impulse turbine with fixed guide vanes

Thakker, Ajit; Hourigan, Fergal - In: Renewable Energy 30 (2005) 9, pp. 1387-1399

into the design process. …

Persistent link: https://www.econbiz.de/10010807084

Design charts for impulse turbine wave energy extraction using experimental data

Thakker, A.; Jarvis, J.; Sahed, A. - In: Renewable Energy 34 (2009) 10, pp. 2264-2270

This study presents newly developed charts to aid in early design of impulse turbine for wave energy extraction. These …. The novel approach is applied in a case study that considers the optimum diameter design selection of next …-generation impulse turbine power take-off. This allowed the selection of the correct impulse turbine sizing for a required rated power …

Persistent link: https://www.econbiz.de/10011045916

Multiple surrogate based optimization of a bidirectional impulse turbine for wave energy conversion

Badhurshah, Rameez; Samad, Abdus - In: Renewable Energy 74 (2015) C, pp. 749-760

approximation, radial basis function, Kriging and weighted average surrogates were incorporated in this problem. Same design points …. Numbers of guide vanes and rotor blades were chosen as the design variables, and the objective was to maximize the blade …

Persistent link: https://www.econbiz.de/10011076854

Wave energy resource in the Estaca de Bares area (Spain)

Iglesias, G.; Carballo, R. - In: Renewable Energy 35 (2010) 7, pp. 1574-1584

The area around Cape Estaca de Bares (the northernmost point of Iberia) presents a great potential for wave energy exploitation owing to its prominent position, with average deepwater wave power values exceeding 40kW/m. The newly available SIMAR-44 dataset, composed of hindcast data spanning 44...

Persistent link: https://www.econbiz.de/10010803600

Wave energy resource assessment in the Mediterranean, the Italian perspective

Liberti, Luca; Carillo, Adriana; Sannino, Gianmaria - In: Renewable Energy 50 (2013) C, pp. 938-949

In this paper we present a high resolution assessment of the wave energy resources in the Mediterranean. The energy resources are evaluated through of a numerical simulation performed on the entire Mediterranean basin for the period 2001–2010 using a third generation ocean wave model. The...

Persistent link: https://www.econbiz.de/10010803673

Bond graph modelling of a wave energy conversion system with hydraulic power take-off

Kurniawan, Adi; Pedersen, Eilif; Moan, Torgeir - In: Renewable Energy 38 (2012) 1, pp. 234-244

A system viewpoint is essential in the study of wave energy converters, since several different energy domains are involved in such devices. In this regard, bond graph, a graphical, port-based approach to modelling engineering systems, serves as a useful tool. This article presents a study of a...

Persistent link: https://www.econbiz.de/10010803813

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