IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v5y2012i12p5229-5242d22189.html
   My bibliography  Save this article

Behavior of the Blade Tip Vortices of a Wind Turbine Equipped with a Brimmed-Diffuser Shroud

Author

Listed:
  • Shuhei Takahashi

    (Department of Aeronautics and Astronautics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan)

  • Yuya Hata

    (Department of Aeronautics and Astronautics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan)

  • Yuji Ohya

    (Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan)

  • Takashi Karasudani

    (Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan)

  • Takanori Uchida

    (Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan)

Abstract

To clarify the behavior of the blade tip vortices of a wind turbine equipped with a brimmed-diffuser shroud, called a “Wind-Lens turbine”, we conducted a three-dimensional numerical simulation using a large eddy simulation (LES). Since this unique wind turbine consists of not only rotating blades but also a diffuser shroud with a broad-ring brim at the exit periphery, the flow field around the turbine is highly complex and unsteady. Previously, our research group conducted numerical simulations using an actuator-disc approximation, in which the rotating blades were simply modeled as an external force on the fluid. Therefore, the detailed flow patterns around the rotating blades and the shroud, including the blade tip vortices, could not be simulated. Instead of an actuator-disc approximation, we used a moving boundary technique in the present CFD simulation to simulate the flow around a rotating blade in order to focus especially on blade tip vortices. The simulation results showed a pair of vortices consisting of a blade tip vortex and a counter-rotating vortex which was generated between the blade tip and the inner surface of the diffuser. Since these vortices interacted with each other, the blade tip vortex was weakened by the counter-rotating vortex. The results showed good agreement with past wind tunnel experiments.

Suggested Citation

  • Shuhei Takahashi & Yuya Hata & Yuji Ohya & Takashi Karasudani & Takanori Uchida, 2012. "Behavior of the Blade Tip Vortices of a Wind Turbine Equipped with a Brimmed-Diffuser Shroud," Energies, MDPI, vol. 5(12), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:5:y:2012:i:12:p:5229-5242:d:22189
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/5/12/5229/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/5/12/5229/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yuji Ohya & Takashi Karasudani, 2010. "A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology," Energies, MDPI, vol. 3(4), pages 1-16, March.
    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. Nunes, Matheus M. & Brasil Junior, Antonio C.P. & Oliveira, Taygoara F., 2020. "Systematic review of diffuser-augmented horizontal-axis turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    2. Rahmatian, Mohammad Ali & Hashemi Tari, Pooyan & Mojaddam, Mohammad & Majidi, Sahand, 2022. "Numerical and experimental study of the ducted diffuser effect on improving the aerodynamic performance of a micro horizontal axis wind turbine," Energy, Elsevier, vol. 245(C).
    3. Khamlaj, Tariq Abdulsalam & Rumpfkeil, Markus Peer, 2018. "Analysis and optimization of ducted wind turbines," Energy, Elsevier, vol. 162(C), pages 1234-1252.
    4. Sridhar, Surya & Zuber, Mohammad & B., Satish Shenoy & Kumar, Amit & Ng, Eddie Y.K. & Radhakrishnan, Jayakrishnan, 2022. "Aerodynamic comparison of slotted and non-slotted diffuser casings for Diffuser Augmented Wind Turbines (DAWT)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).
    5. Leloudas, Stavros N. & Lygidakis, Georgios N. & Eskantar, Alexandros I. & Nikolos, Ioannis K., 2020. "A robust methodology for the design optimization of diffuser augmented wind turbine shrouds," Renewable Energy, Elsevier, vol. 150(C), pages 722-742.
    6. Ye, Xuemin & Zhang, Jiankun & Li, Chunxi, 2017. "Effect of blade tip pattern on performance of a twin-stage variable-pitch axial fan," Energy, Elsevier, vol. 126(C), pages 535-563.
    7. Ahmad I. Elshamy & Engy Elshazly & Olugbenga Timo Oladinrin & Muhammad Qasim Rana & Rasha Said Abd el-Lateef & Seif Tarek El-Badry & Mahmoud Elthakaby & Ahmed M. R. Elbaz & Khaled Dewidar & Iman El-Ma, 2022. "Challenges and Opportunities for Integrating RE Systems in Egyptian Building Stocks," Energies, MDPI, vol. 15(23), pages 1-23, November.
    8. Koichi Watanabe & Yuji Ohya, 2021. "A Simple Theory and Performance Prediction for a Shrouded Wind Turbine with a Brimmed Diffuser," Energies, MDPI, vol. 14(12), pages 1-15, June.
    9. Lipian, Michal & Dobrev, Ivan & Massouh, Fawaz & Jozwik, Krzysztof, 2020. "Small wind turbine augmentation: Numerical investigations of shrouded- and twin-rotor wind turbines," Energy, Elsevier, vol. 201(C).
    10. Koichi Watanabe & Yuji Ohya & Takanori Uchida, 2019. "Power Output Enhancement of a Ducted Wind Turbine by Stabilizing Vortices around the Duct," Energies, MDPI, vol. 12(16), pages 1-17, August.
    11. Wang, Wen-Xue & Matsubara, Terutake & Hu, Junfeng & Odahara, Satoru & Nagai, Tomoyuki & Karasutani, Takashi & Ohya, Yuji, 2015. "Experimental investigation into the influence of the flanged diffuser on the dynamic behavior of CFRP blade of a shrouded wind turbine," Renewable Energy, Elsevier, vol. 78(C), pages 386-397.
    12. Rivarolo, M. & Freda, A. & Traverso, A., 2020. "Test campaign and application of a small-scale ducted wind turbine with analysis of yaw angle influence," Applied Energy, Elsevier, vol. 279(C).
    13. Ye, Xuemin & Li, Pengmin & Li, Chunxi & Ding, Xueliang, 2015. "Numerical investigation of blade tip grooving effect on performance and dynamics of an axial flow fan," Energy, Elsevier, vol. 82(C), pages 556-569.
    14. Rahmatian, Mohammad Ali & Nazarian Shahrbabaki, Amin & Moeini, Seyed Peyman, 2023. "Single-objective optimization design of convergent-divergent ducts of ducted wind turbine using RSM and GA, to increase power coefficient of a small-scale horizontal axis wind turbine," Energy, Elsevier, vol. 269(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. Peace-Maker Masukume & Golden Makaka & Patrick Mukumba, 2018. "Optimization of the Power Output of a Bare Wind Turbine by the Use of a Plain Conical Diffuser," Sustainability, MDPI, vol. 10(8), pages 1-7, July.
    2. Sidaard Gunasekaran & Madison Peyton & Neal Novotny, 2022. "Aerodynamic Interactions of Wind Lenses at Close Proximities," Energies, MDPI, vol. 15(13), pages 1-17, June.
    3. Saleem, Arslan & Kim, Man-Hoe, 2020. "Aerodynamic performance optimization of an airfoil-based airborne wind turbine using genetic algorithm," Energy, Elsevier, vol. 203(C).
    4. N. Aravindhan & M. P. Natarajan & S. Ponnuvel & P.K. Devan, 2023. "Recent developments and issues of small-scale wind turbines in urban residential buildings- A review," Energy & Environment, , vol. 34(4), pages 1142-1169, June.
    5. Ahmad Fazlizan & Wen Tong Chong & Sook Yee Yip & Wooi Ping Hew & Sin Chew Poh, 2015. "Design and Experimental Analysis of an Exhaust Air Energy Recovery Wind Turbine Generator," Energies, MDPI, vol. 8(7), pages 1-19, June.
    6. Chong, W.T. & Gwani, M. & Shamshirband, S. & Muzammil, W.K. & Tan, C.J. & Fazlizan, A. & Poh, S.C. & Petković, Dalibor & Wong, K.H., 2016. "Application of adaptive neuro-fuzzy methodology for performance investigation of a power-augmented vertical axis wind turbine," Energy, Elsevier, vol. 102(C), pages 630-636.
    7. Ye, Jianjun & Cheng, Yanglin & Xie, Junlong & Huang, Xiaohong & Zhang, Yuan & Hu, Siyao & Salem, Shehab & Wu, Jiejun, 2020. "Effects of divergent angle on the flow behaviors in low speed wind accelerating ducts," Renewable Energy, Elsevier, vol. 152(C), pages 1292-1301.
    8. Rahmatian, Mohammad Ali & Hashemi Tari, Pooyan & Mojaddam, Mohammad & Majidi, Sahand, 2022. "Numerical and experimental study of the ducted diffuser effect on improving the aerodynamic performance of a micro horizontal axis wind turbine," Energy, Elsevier, vol. 245(C).
    9. Søren Hjort & Helgi Larsen, 2015. "Rotor Design for Diffuser Augmented Wind Turbines," Energies, MDPI, vol. 8(10), pages 1-39, September.
    10. Khamlaj, Tariq Abdulsalam & Rumpfkeil, Markus Peer, 2018. "Analysis and optimization of ducted wind turbines," Energy, Elsevier, vol. 162(C), pages 1234-1252.
    11. Keramat Siavash, Nemat & Najafi, G. & Tavakkoli Hashjin, Teymour & Ghobadian, Barat & Mahmoodi, Esmail, 2020. "Mathematical modeling of a horizontal axis shrouded wind turbine," Renewable Energy, Elsevier, vol. 146(C), pages 856-866.
    12. Leloudas, Stavros N. & Lygidakis, Georgios N. & Eskantar, Alexandros I. & Nikolos, Ioannis K., 2020. "A robust methodology for the design optimization of diffuser augmented wind turbine shrouds," Renewable Energy, Elsevier, vol. 150(C), pages 722-742.
    13. Liu, Jie & Song, Mengxuan & Chen, Kai & Wu, Bingheng & Zhang, Xing, 2016. "An optimization methodology for wind lens profile using Computational Fluid Dynamics simulation," Energy, Elsevier, vol. 109(C), pages 602-611.
    14. Göltenbott, Uli & Ohya, Yuji & Yoshida, Shigeo & Jamieson, Peter, 2017. "Aerodynamic interaction of diffuser augmented wind turbines in multi-rotor systems," Renewable Energy, Elsevier, vol. 112(C), pages 25-34.
    15. Dessoky, Amgad & Bangga, Galih & Lutz, Thorsten & Krämer, Ewald, 2019. "Aerodynamic and aeroacoustic performance assessment of H-rotor darrieus VAWT equipped with wind-lens technology," Energy, Elsevier, vol. 175(C), pages 76-97.
    16. Xu, Bin & Ma, Qiyu & Huang, Diangui, 2021. "Research on energy harvesting properties of a diffuser-augmented flapping wing," Renewable Energy, Elsevier, vol. 180(C), pages 271-280.
    17. Vaz, Jerson R.P. & Wood, David H., 2018. "Effect of the diffuser efficiency on wind turbine performance," Renewable Energy, Elsevier, vol. 126(C), pages 969-977.
    18. Sridhar, Surya & Zuber, Mohammad & B., Satish Shenoy & Kumar, Amit & Ng, Eddie Y.K. & Radhakrishnan, Jayakrishnan, 2022. "Aerodynamic comparison of slotted and non-slotted diffuser casings for Diffuser Augmented Wind Turbines (DAWT)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).
    19. Seyedsaeed Tabatabaeikia & Nik Nazri Bin Nik-Ghazali & Wen Tong Chong & Behzad Shahizare & Ahmad Fazlizan & Alireza Esmaeilzadeh & Nima Izadyar, 2016. "A Comparative Computational Fluid Dynamics Study on an Innovative Exhaust Air Energy Recovery Wind Turbine Generator," Energies, MDPI, vol. 9(5), pages 1-19, May.
    20. Ben Hamida, Imen & Salah, Saoussen Brini & Msahli, Faouzi & Mimouni, Mohamed Faouzi, 2018. "Optimal network reconfiguration and renewable DG integration considering time sequence variation in load and DGs," Renewable Energy, Elsevier, vol. 121(C), pages 66-80.

    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:5:y:2012:i:12:p:5229-5242:d:22189. 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.