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Numerical Investigation on the Aerodynamics of a Dual Vertical Axis Wind Turbine with a New Dual-Deflector.

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Title: Numerical Investigation on the Aerodynamics of a Dual Vertical Axis Wind Turbine with a New Dual-Deflector.
Authors: Cao, Yang1 (AUTHOR), Yuan, Yongfei1,2 (AUTHOR), Qian, Zhong2,3 (AUTHOR), Wu, Aihua1 (AUTHOR), Yang, Yuan1,2 (AUTHOR), Cao, Zhening1,3 (AUTHOR), Chen, Xiang1 (AUTHOR), Cai, Yinuo1 (AUTHOR), Mao, Lin1 (AUTHOR), Shi, Chengyun1 (AUTHOR), Wang, Jia3 (AUTHOR), Chen, Chao3 (AUTHOR), Song, Chenguang1 (AUTHOR) chenguang_1987@hotmail.com
Source: Energies (19961073). May2026, Vol. 19 Issue 10, p2284. 23p.
Subject Terms: *Vertical axis wind turbines, *Computational fluid dynamics, *Wind turbine efficiency, *Torque measurements, *Computer simulation, *Aerodynamics
Abstract: This work investigates the performance degradation of dual vertical axis wind turbines at low tip speed ratios using numerical simulation using two-dimensional computational fluid dynamics (CFD). In order to address this problem, it suggests a unique deflector configuration and arrangement. The results show a 21.33% improvement in self-starting potential at low TSRs when dual-configuration deflectors are deployed close to the twin rotors. Additionally, the average torque coefficient increases by 24.31% and the peak power coefficient increases by 53.12%, indicating a significant improvement in performance at high tip speed ratios. While curved deflectors on both sides provide converging channels that increase flow volume and dynamic pressure in the downwind zone, the central deflector decreases reverse airflow in the midsection. The proposed deflector arrangement also exhibits great potential for the compact layout of wind farm arrays; the accelerated wake recovery characteristic is beneficial to improving the overall efficiency of wind farms. With important ramifications for the advancement of renewable energy technology, this work provides fresh insights into dual vertical axis wind turbine optimization. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194141399
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Numerical Investigation on the Aerodynamics of a Dual Vertical Axis Wind Turbine with a New Dual-Deflector.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Cao%2C+Yang%22">Cao, Yang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yuan%2C+Yongfei%22">Yuan, Yongfei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qian%2C+Zhong%22">Qian, Zhong</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Aihua%22">Wu, Aihua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Yuan%22">Yang, Yuan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Zhening%22">Cao, Zhening</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Xiang%22">Chen, Xiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cai%2C+Yinuo%22">Cai, Yinuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mao%2C+Lin%22">Mao, Lin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shi%2C+Chengyun%22">Shi, Chengyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Jia%22">Wang, Jia</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Chao%22">Chen, Chao</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Chenguang%22">Song, Chenguang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chenguang_1987@hotmail.com</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. May2026, Vol. 19 Issue 10, p2284. 23p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Vertical+axis+wind+turbines%22">Vertical axis wind turbines</searchLink><br />*<searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Wind+turbine+efficiency%22">Wind turbine efficiency</searchLink><br />*<searchLink fieldCode="DE" term="%22Torque+measurements%22">Torque measurements</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Aerodynamics%22">Aerodynamics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This work investigates the performance degradation of dual vertical axis wind turbines at low tip speed ratios using numerical simulation using two-dimensional computational fluid dynamics (CFD). In order to address this problem, it suggests a unique deflector configuration and arrangement. The results show a 21.33% improvement in self-starting potential at low TSRs when dual-configuration deflectors are deployed close to the twin rotors. Additionally, the average torque coefficient increases by 24.31% and the peak power coefficient increases by 53.12%, indicating a significant improvement in performance at high tip speed ratios. While curved deflectors on both sides provide converging channels that increase flow volume and dynamic pressure in the downwind zone, the central deflector decreases reverse airflow in the midsection. The proposed deflector arrangement also exhibits great potential for the compact layout of wind farm arrays; the accelerated wake recovery characteristic is beneficial to improving the overall efficiency of wind farms. With important ramifications for the advancement of renewable energy technology, this work provides fresh insights into dual vertical axis wind turbine optimization. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en19102284
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 23
        StartPage: 2284
    Subjects:
      – SubjectFull: Vertical axis wind turbines
        Type: general
      – SubjectFull: Computational fluid dynamics
        Type: general
      – SubjectFull: Wind turbine efficiency
        Type: general
      – SubjectFull: Torque measurements
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Aerodynamics
        Type: general
    Titles:
      – TitleFull: Numerical Investigation on the Aerodynamics of a Dual Vertical Axis Wind Turbine with a New Dual-Deflector.
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            – D: 15
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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            – TitleFull: Energies (19961073)
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