IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i14p2791-d250074.html
   My bibliography  Save this article

Design Optimisation of a Unidirectional Centrifugal Radial-Air-Turbine for Application in OWC Wave Energy Converters

Author

Listed:
  • Nazanin Ansarifard

    (Australian Maritime College, University of Tasmania, Maritime way, Newnham, TAS 7248, Australia)

  • Alan Fleming

    (Australian Maritime College, University of Tasmania, Maritime way, Newnham, TAS 7248, Australia)

  • Alan Henderson

    (School of Engineering, University of Tasmania, Sandy Bay, TAS 7001, Australia)

  • S.S. Kianejad

    (Australian Maritime College, University of Tasmania, Maritime way, Newnham, TAS 7248, Australia)

  • Shuhong Chai

    (Australian Maritime College, University of Tasmania, Maritime way, Newnham, TAS 7248, Australia)

Abstract

Research on employing unidirectional air turbines for oscillating water columns (OWC) has received much attention in the last few years. Most unidirectional turbine topologies considered to date use axial flow unidirectional turbines. The radial turbine offers an alternative with increased resistance to backflow. However, in general, the efficiency of radial turbines is lower than axial turbines. This study describes a computational fluid dynamics (CFD)-based design optimisation of an outflow radial turbine for the intended application in an OWC system configured to enable primarily unidirectional flow through the turbine. The rotor blade geometry is parametrically described in addition to other turbine components. The central composite design (CCD) and genetic algorithm were used to explore an optimum design of a centrifugal radial turbine for a maximum total-to-static efficiency. Seven computer aided design (CAD) parameters were investigated as the design variables, and the optimum turbine design was identified in a population of 79 design points. The optimum outflow turbine was found to have a peak steady-state efficiency of 72%, and the leading-edge angle, guide vane angle, trailing edge angle, and the chord length were found to have the highest sensitivity. Compared to an inflow radial turbine, the geometrical features of the outflow turbine permit higher absolute velocities of the flow at the rotor entrance and increase the dynamic pressure changes across the rotor. Therefore, the optimised outflow radial turbine can obtain acceptable rotor energy transfer despite having a negative centrifugal energy transfer term.

Suggested Citation

  • Nazanin Ansarifard & Alan Fleming & Alan Henderson & S.S. Kianejad & Shuhong Chai, 2019. "Design Optimisation of a Unidirectional Centrifugal Radial-Air-Turbine for Application in OWC Wave Energy Converters," Energies, MDPI, vol. 12(14), pages 1-22, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2791-:d:250074
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/14/2791/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/14/2791/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Falcão, António F.O. & Henriques, João C.C., 2016. "Oscillating-water-column wave energy converters and air turbines: A review," Renewable Energy, Elsevier, vol. 85(C), pages 1391-1424.
    2. Falcão, A.F.O. & Gato, L.M.C. & Nunes, E.P.A.S., 2013. "A novel radial self-rectifying air turbine for use in wave energy converters. Part 2. Results from model testing," Renewable Energy, Elsevier, vol. 53(C), pages 159-164.
    3. El Marjani, A. & Castro Ruiz, F. & Rodriguez, M.A. & Parra Santos, M.T., 2008. "Numerical modelling in wave energy conversion systems," Energy, Elsevier, vol. 33(8), pages 1246-1253.
    4. Ansarifard, Nazanin & Kianejad, S.S. & Fleming, Alan & Chai, Shuhong, 2019. "A radial inflow air turbine design for a vented oscillating water column," Energy, Elsevier, vol. 166(C), pages 380-391.
    5. Falcão, A.F.O. & Gato, L.M.C. & Nunes, E.P.A.S., 2013. "A novel radial self-rectifying air turbine for use in wave energy converters," Renewable Energy, Elsevier, vol. 50(C), pages 289-298.
    6. Rodríguez, Laudino & Pereiras, Bruno & Fernández-Oro, Jesús & Castro, Francisco, 2019. "Optimization and experimental tests of a centrifugal turbine for an OWC device equipped with a twin turbines configuration," Energy, Elsevier, vol. 171(C), pages 710-720.
    7. Badhurshah, Rameez & Samad, Abdus, 2015. "Multiple surrogate based optimization of a bidirectional impulse turbine for wave energy conversion," Renewable Energy, Elsevier, vol. 74(C), pages 749-760.
    8. Pereiras, Bruno & Castro, Francisco & Marjani, Abdelatif el & Rodríguez, Miguel A., 2011. "An improved radial impulse turbine for OWC," Renewable Energy, Elsevier, vol. 36(5), pages 1477-1484.
    9. Lopes, Bárbara S. & Gato, Luís M.C. & Falcão, António F.O. & Henriques, João C.C., 2019. "Test results of a novel twin-rotor radial inflow self-rectifying air turbine for OWC wave energy converters," Energy, Elsevier, vol. 170(C), pages 869-879.
    10. Falcão, António F.O. & Gato, Luís M.C. & Henriques, João C.C. & Borges, João E. & Pereiras, Bruno & Castro, Francisco, 2015. "A novel twin-rotor radial-inflow air turbine for oscillating-water-column wave energy converters," Energy, Elsevier, vol. 93(P2), pages 2116-2125.
    11. Setoguchi, T & Santhakumar, S & Maeda, H & Takao, M & Kaneko, K, 2001. "A review of impulse turbines for wave energy conversion," Renewable Energy, Elsevier, vol. 23(2), pages 261-292.
    12. Gomes, R.P.F. & Henriques, J.C.C. & Gato, L.M.C. & Falcão, A.F.O., 2012. "Multi-point aerodynamic optimization of the rotor blade sections of an axial-flow impulse air turbine for wave energy conversion," Energy, Elsevier, vol. 45(1), pages 570-580.
    13. Mohamed, M.H. & Janiga, G. & Pap, E. & Thévenin, D., 2011. "Multi-objective optimization of the airfoil shape of Wells turbine used for wave energy conversion," Energy, Elsevier, vol. 36(1), pages 438-446.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ansarifard, Nazanin & Kianejad, S.S. & Fleming, Alan & Henderson, Alan & Chai, Shuhong, 2020. "Design optimization of a purely radial turbine for operation in the inhalation mode of an oscillating water column," Renewable Energy, Elsevier, vol. 152(C), pages 540-556.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Ansarifard, Nazanin & Kianejad, S.S. & Fleming, Alan & Henderson, Alan & Chai, Shuhong, 2020. "Design optimization of a purely radial turbine for operation in the inhalation mode of an oscillating water column," Renewable Energy, Elsevier, vol. 152(C), pages 540-556.
    2. Gato, L.M.C. & Maduro, A.R. & Carrelhas, A.A.D. & Henriques, J.C.C. & Ferreira, D.N., 2021. "Performance improvement of the biradial self-rectifying impulse air-turbine for wave energy conversion by multi-row guide vanes: Design and experimental results," Energy, Elsevier, vol. 216(C).
    3. Manuel García-Díaz & Bruno Pereiras & Celia Miguel-González & Laudino Rodríguez & Jesús Fernández-Oro, 2021. "CFD Analysis of the Performance of a Double Decker Turbine for Wave Energy Conversion," Energies, MDPI, vol. 14(4), pages 1-19, February.
    4. Gomes, R.P.F. & Henriques, J.C.C. & Gato, L.M.C. & Falcão, A.F.O., 2012. "Multi-point aerodynamic optimization of the rotor blade sections of an axial-flow impulse air turbine for wave energy conversion," Energy, Elsevier, vol. 45(1), pages 570-580.
    5. Rodríguez, Laudino & Pereiras, Bruno & García-Diaz, Manuel & Fernández-Oro, Jesús & Castro, Francisco, 2020. "Flow pattern analysis of an outflow radial turbine for twin-turbines-OWC wave energy converters," Energy, Elsevier, vol. 211(C).
    6. Carrelhas, A.A.D. & Gato, L.M.C. & Henriques, J.C.C. & Falcão, A.F.O., 2020. "Experimental study of a self-rectifying biradial air turbine with fixed guide-vanes arranged into two concentric annular rows," Energy, Elsevier, vol. 198(C).
    7. Liu, Hua & Wang, Weijun & Wen, Yadong & Mao, Longbo & Wang, Wenqiang & Mi, Hongju, 2019. "A novel axial flow self-rectifying turbine for use in wave energy converters," Energy, Elsevier, vol. 189(C).
    8. Pierre Benreguig & James Kelly & Vikram Pakrashi & Jimmy Murphy, 2019. "Wave-to-Wire Model Development and Validation for Two OWC Type Wave Energy Converters," Energies, MDPI, vol. 12(20), pages 1-28, October.
    9. Torres, Fernando R. & Teixeira, Paulo R.F. & Didier, Eric, 2018. "A methodology to determine the optimal size of a wells turbine in an oscillating water column device by using coupled hydro-aerodynamic models," Renewable Energy, Elsevier, vol. 121(C), pages 9-18.
    10. Paresh Halder & Hideki Takebe & Krisna Pawitan & Jun Fujita & Shuji Misumi & Tsumoru Shintake, 2020. "Turbine Characteristics of Wave Energy Conversion Device for Extraction Power Using Breaking Waves," Energies, MDPI, vol. 13(4), pages 1-17, February.
    11. Halder, Paresh & Samad, Abdus & Thévenin, Dominique, 2017. "Improved design of a Wells turbine for higher operating range," Renewable Energy, Elsevier, vol. 106(C), pages 122-134.
    12. Falcão, António F.O. & Henriques, João C.C., 2016. "Oscillating-water-column wave energy converters and air turbines: A review," Renewable Energy, Elsevier, vol. 85(C), pages 1391-1424.
    13. Gonçalves, Rafael A.A.C. & Teixeira, Paulo R.F. & Didier, Eric & Torres, Fernando R., 2020. "Numerical analysis of the influence of air compressibility effects on an oscillating water column wave energy converter chamber," Renewable Energy, Elsevier, vol. 153(C), pages 1183-1193.
    14. Falcão, António F.O. & Henriques, João C.C. & Gato, Luís M.C., 2018. "Self-rectifying air turbines for wave energy conversion: A comparative analysis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 1231-1241.
    15. Erlantz Otaola & Aitor J. Garrido & Jon Lekube & Izaskun Garrido, 2019. "A Comparative Analysis of Self-Rectifying Turbines for the Mutriku Oscillating Water Column Energy Plant," Complexity, Hindawi, vol. 2019, pages 1-14, January.
    16. Badhurshah, Rameez & Dudhgaonkar, Prasad & Jalihal, Purnima & Samad, Abdus, 2018. "High efficiency design of an impulse turbine used in oscillating water column to harvest wave energy," Renewable Energy, Elsevier, vol. 121(C), pages 344-354.
    17. Lopes, Bárbara S. & Gato, Luís M.C. & Falcão, António F.O. & Henriques, João C.C., 2019. "Test results of a novel twin-rotor radial inflow self-rectifying air turbine for OWC wave energy converters," Energy, Elsevier, vol. 170(C), pages 869-879.
    18. Henriques, J.C.C. & Gato, L.M.C. & Falcão, A.F.O. & Robles, E. & Faÿ, F.-X., 2016. "Latching control of a floating oscillating-water-column wave energy converter," Renewable Energy, Elsevier, vol. 90(C), pages 229-241.
    19. Xu, Conghao & Huang, Zhenhua, 2018. "A dual-functional wave-power plant for wave-energy extraction and shore protection: A wave-flume study," Applied Energy, Elsevier, vol. 229(C), pages 963-976.
    20. Carrelhas, A.A.D. & Gato, L.M.C. & Henriques, J.C.C. & Falcão, A.F.O. & Varandas, J., 2019. "Test results of a 30 kW self-rectifying biradial air turbine-generator prototype," Renewable and Sustainable Energy Reviews, Elsevier, vol. 109(C), pages 187-198.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2791-:d:250074. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.