Sökning: L773:1364 0321 OR L773:1879 0690 >
Experimental invest...
Experimental investigation on performance improvement by mid-plane guide-vanes in a biplane-rotor Wells turbine for wave energy conversion
-
- Alves, Joao S. (författare)
- KTH
-
- Gato, Luis M. C. (författare)
- Univ Lisbon, Inst Super Tecn, IDMEC, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal.
-
- Falcao, Antonio F. O. (författare)
- Univ Lisbon, Inst Super Tecn, IDMEC, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal.
-
visa fler...
-
- Henriques, Joao C. C. (författare)
- Univ Lisbon, Inst Super Tecn, IDMEC, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal.
-
visa färre...
-
KTH Univ Lisbon, Inst Super Tecn, IDMEC, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal (creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
-
Ingår i: Renewable & sustainable energy reviews. - : Elsevier BV. - 1364-0321 .- 1879-0690. ; 150
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- The Wells turbine is the most frequently used or proposed self-rectifying air turbine for oscillating-water column wave-energy converter application, largely because of its conceptual and mechanical simplicity. Biplane Wells turbines allow a higher total blade solidity to be attained than monoplane turbines do, but this results in larger aerodynamic losses associated with the swirl kinetic energy loss at turbine exit. This may be overcome by the presence of a row of guide vanes between the two rotor planes, a solution that had been proposed and investigated theoretically or by numerical modelling. Results of turbine overall performance and flow details are reported from laboratory tests of a biplane Wells turbine without guide vanes and with specially designed guide vanes. The presence of the guide vanes was found to increase the peak efficiency by seven percentual points, while reducing (for fixed rotational speed) the damping provided by the turbine. Measured losses in the guide vane row were much smaller than in the rotors. Experimental results are compared with previously published numerical results. A stochastic theoretical transform was applied to obtain averaged results for the turbine performance subject to the irregular bidirectional air flow induced by real sea waves.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Wells turbine
- Air turbine
- Biplane
- Guide vanes
- Wave energy
- Oscillating water column
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas