IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i23p9075-d989143.html
   My bibliography  Save this article

Aerodynamic Performance Analysis of Trailing Edge Serrations on a Wells Turbine

Author

Listed:
  • Abdullah Saad Alkhalifa

    (Mechanical Engineering Department, North Carolina A&T State University, Greensboro, NC 27411, USA)

  • Mohammad Nasim Uddin

    (Mechanical Engineering Department, North Carolina A&T State University, Greensboro, NC 27411, USA)

  • Michael Atkinson

    (Mechanical Engineering Department, North Carolina A&T State University, Greensboro, NC 27411, USA)

Abstract

The primary objective of this investigation was to explore the aerodynamic impact of adding trailing edge serrations to a Wells turbine. The baseline turbine consists of eight NACA 0015 blades. The blade chord length was 0.125 m and the span was 0.100 m. Two modified serrated blade configurations were studied: (1) full-span, and (2) partial-span covering 0.288c of the trailing edge. The numerical simulations were carried out by solving the three-dimensional, incompressible steady-state Reynolds Averaged Navier-Stokes (RANS) equations using the k-ω SST turbulence model in ANSYS™ (CFX). The aerodynamic performance of the modified Wells turbine was compared to the baseline by calculating non-dimensional parameters (i.e., torque coefficient, pressure drop coefficient, and turbine efficiency). A comparison of the streamlines was performed to analyze the flow topology around the turbine blades for a flow coefficient range of 0.075 ≤ ϕ ≤ 0.275, representing an angle of attack range of 4.29° ≤ α ≤ 15.3°. The trailing edge serrations generated a substantial change in surface pressure and effectively reduced the separated flow region, thus improving efficiency in most cases. As a result, there was a modest peak efficiency increase of 1.51% and 1.22%, for the partial- and full-span trailing edge serrations, respectively.

Suggested Citation

  • Abdullah Saad Alkhalifa & Mohammad Nasim Uddin & Michael Atkinson, 2022. "Aerodynamic Performance Analysis of Trailing Edge Serrations on a Wells Turbine," Energies, MDPI, vol. 15(23), pages 1-21, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:9075-:d:989143
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/23/9075/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/23/9075/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Setoguchi, T & Santhakumar, S & Takao, M & Kim, T.H & Kaneko, K, 2001. "Effect of guide vane shape on the performance of a Wells turbine," Renewable Energy, Elsevier, vol. 23(1), pages 1-15.
    2. 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.
    3. Setoguchi, T. & Santhakumar, S. & Takao, M. & Kim, T.H. & Kaneko, K., 2003. "A modified Wells turbine for wave energy conversion," Renewable Energy, Elsevier, vol. 28(1), pages 79-91.
    4. 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. Mohammad Nasim Uddin & Michael Atkinson & Frimpong Opoku, 2023. "CFD Investigation of a Hybrid Wells Turbine with Passive Flow Control," Energies, MDPI, vol. 16(9), pages 1-28, April.
    2. Wang, Ru & Cui, Ying & Liu, Zhen & Li, Boyang & Zhang, Yongbo, 2024. "Numerical study on unsteady performance of a Wells turbine under irregular wave conditions," Renewable Energy, Elsevier, vol. 225(C).

    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. Mohamed, M.H. & Shaaban, S., 2013. "Optimization of blade pitch angle of an axial turbine used for wave energy conversion," Energy, Elsevier, vol. 56(C), pages 229-239.
    2. 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).
    3. Das, Tapas K. & Samad, Abdus, 2020. "Influence of stall fences on the performance of Wells turbine," Energy, Elsevier, vol. 194(C).
    4. 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.
    5. Adriano Silva Bastos & Tâmara Rita Costa de Souza & Dieimys Santos Ribeiro & Mirian de Lourdes Noronha Motta Melo & Carlos Barreira Martinez, 2023. "Wave Energy Generation in Brazil: A Georeferenced Oscillating Water Column Inventory," Energies, MDPI, vol. 16(8), pages 1-24, April.
    6. Das, Tapas K. & Kumar, Kumud & Samad, Abdus, 2020. "Experimental Analysis of a Biplane Wells Turbine under Different Load Conditions," Energy, Elsevier, vol. 206(C).
    7. Kotb, Ahmed T.M. & Nawar, Mohamed A.A. & Attai, Youssef A. & Mohamed, Mohamed H., 2023. "Performance enhancement of a Wells turbine using CFD-optimization algorithms coupling," Energy, Elsevier, vol. 282(C).
    8. 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.
    9. Nazeryan, Mohammad & Lakzian, Esmail, 2018. "Detailed entropy generation analysis of a Wells turbine using the variation of the blade thickness," Energy, Elsevier, vol. 143(C), pages 385-405.
    10. Kotb, Ahmed T.M. & Nawar, Mohamed A.A. & Attai, Youssef A. & Mohamed, Mohamed H., 2022. "Performance assessment of a modified wells turbine using an integrated casing groove and Gurney flap design for wave energy conversion," Renewable Energy, Elsevier, vol. 197(C), pages 627-642.
    11. Halder, Paresh & Samad, Abdus & Kim, Jin-Hyuk & Choi, Young-Seok, 2015. "High performance ocean energy harvesting turbine design–A new casing treatment scheme," Energy, Elsevier, vol. 86(C), pages 219-231.
    12. Geng, Kaihe & Yang, Ce & Zhao, Ben & Zhao, Wei & Gao, Jianbing & Hu, Chenxing & Zhang, Hanzhi & Wu, Wangxia, 2023. "Residual circulation budget analysis in a Wells turbine with leading-edge micro-cylinders," Renewable Energy, Elsevier, vol. 216(C).
    13. Kotb, Ahmed T.M. & Nawar, Mohamed A.A. & Attai, Youssef A. & Mohamed, Mohamed H., 2024. "Impact of tapered leading-edge micro-cylinder on the performance of wells turbine for wave energy conversion: CFD-optimization algorithms coupling study," Energy, Elsevier, vol. 293(C).
    14. Shehata, Ahmed S. & Saqr, Khalid M. & Xiao, Qing & Shehadeh, Mohamed F. & Day, Alexander, 2016. "Performance analysis of wells turbine blades using the entropy generation minimization method," Renewable Energy, Elsevier, vol. 86(C), pages 1123-1133.
    15. López, I. & Castro, A. & Iglesias, G., 2015. "Hydrodynamic performance of an oscillating water column wave energy converter by means of particle imaging velocimetry," Energy, Elsevier, vol. 83(C), pages 89-103.
    16. Chen, Jing & Wen, Hongjie & Wang, Yongxue & Ren, Bing, 2020. "Experimental investigation of an annular sector OWC device incorporated into a dual cylindrical caisson breakwater," Energy, Elsevier, vol. 211(C).
    17. Cleynen, Olivier & Engel, Sebastian & Hoerner, Stefan & Thévenin, Dominique, 2021. "Optimal design for the free-stream water wheel: A two-dimensional study," Energy, Elsevier, vol. 214(C).
    18. Nishi, Yasuyuki & Mori, Nozomi & Yamada, Naoki & Inagaki, Terumi, 2022. "Study on the design method for axial flow runner that combines design of experiments, response surface method, and optimization method to one-dimensional design method," Renewable Energy, Elsevier, vol. 185(C), pages 96-110.
    19. Ramadan, A. & Mohamed, M.H. & Marzok, S.Y. & Montasser, O.A. & El Feky, A. & El Baz, A.R., 2014. "An artificial generation of a few specific wave conditions: New simulator design and experimental performance," Energy, Elsevier, vol. 69(C), pages 309-318.
    20. 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.

    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:15:y:2022:i:23:p:9075-:d:989143. 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.