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A novel curtain design to enhance the aerodynamic performance of Invelox: A steady-RANS numerical simulation

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  • Anbarsooz, M.
  • Amiri, M.
  • Rashidi, I.

Abstract

Invelox is a patented structure designed to capture the incident wind from every direction, guide the collected wind to the ground level and increase its velocity. Previous numerical studies have revealed that a considerable portion of the collected wind escapes the structure from the opposite side of the wind entering Invelox. In the present study, three possible curtain designs are proposed to reduce or fully-eliminate this escaping air. The improved capability of Invelox to augment the wind velocity using these curtain systems is evaluated via numerical simulations. The results show that the best configuration can fully eliminate the escaping air and it will not disturb the air flow uniformity inside the Venturi section. On average, the best design can lead to a 25% increase in the average wind velocity inside the Venturi for the wind velocities of 3–12 m/s. The results also show that although it has been claimed that Invelox accepts wind from all directions, it can only be efficient at the incident wind directions of −90 to 90°. Increasing the turbulent intensity of the upcoming wind from 0 to 20%, however, has no considerable effects on the Invelox speed ratio.

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  • Anbarsooz, M. & Amiri, M. & Rashidi, I., 2019. "A novel curtain design to enhance the aerodynamic performance of Invelox: A steady-RANS numerical simulation," Energy, Elsevier, vol. 168(C), pages 207-221.
    • Handle: RePEc:eee:energy:v:168:y:2019:i:c:p:207-221
    DOI: 10.1016/j.energy.2018.11.122
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    Cited by:

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    4. Ghorani, Mohammad Mahdi & Karimi, Behrooz & Mirghavami, Seyed Mohammad & Saboohi, Zoheir, 2023. "A numerical study on the feasibility of electricity production using an optimized wind delivery system (Invelox) integrated with a Horizontal axis wind turbine (HAWT)," Energy, Elsevier, vol. 268(C).
    5. Shaterabadi, Mohammad & Jirdehi, Mehdi Ahmadi & Amiri, Nima & Omidi, Sina, 2020. "Enhancement the economical and environmental aspects of plus-zero energy buildings integrated with INVELOX turbines," Renewable Energy, Elsevier, vol. 153(C), pages 1355-1367.
    6. Rezaeiha, Abdolrahim & Montazeri, Hamid & Blocken, Bert, 2019. "On the accuracy of turbulence models for CFD simulations of vertical axis wind turbines," Energy, Elsevier, vol. 180(C), pages 838-857.
    7. Siahpour, Shahin & Khakiani, Fardad N. & Fazlollahi, Vahid & Golozar, Ali & Shirazi, Farzad A., 2021. "Morphing Omni-directional Panel Mechanism: A novel active roof design for improving the performance of the wind delivery system," Energy, Elsevier, vol. 217(C).
    8. Hosseini, S. Rasoul & Ganji, Davoud Domiri, 2020. "A novel design of nozzle-diffuser to enhance performance of INVELOX wind turbine," Energy, Elsevier, vol. 198(C).
    9. 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.

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