Darrieus type vertical axis wind turbines (VAWT) are being used commercially nowadays; however, they still need to improve in terms of performance as they work in an urban environment where the wind speeds are low and the gusts are frequent. The aerodynamic performance of Darrieus turbine is highly affected by the wingtip vortices. This paper attempts at analyzing and comparing the performance of Darrieus with the use of various wingtip devices. Attempts have also been made to find out optimal working parameters by studying the flow through turbines with different tip speed ratios and different inlet wind speeds. A comparative computational fluid dynamics (CFD) simulation was performed on a small-scale, straight-bladed Darrieus rotor vertical axis wind turbine, with a large stationary domain and a small rotating subdomain using sliding mesh technique. Comparison of the performance of end tip device that can be used against a baseline rotor configuration is done, with the aim of identifying the best tip architecture. The main focus lies on building an experimental setup to validate the results obtained with the CFD simulation and to compare the performance with and without wingtip device. VAWTs with wingtip device show very promising results compared to the baseline model.
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December 2018
Research-Article
Numerical and Experimental Study on Performance Enhancement of Darrieus Vertical Axis Wind Turbine With Wingtip Devices
Nishant Mishra,
Nishant Mishra
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: nishant.mishra@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: nishant.mishra@snu.edu.in
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Anand Sagar Gupta,
Anand Sagar Gupta
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: as517@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: as517@snu.edu.in
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Jishnav Dawar,
Jishnav Dawar
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: jd332@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: jd332@snu.edu.in
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Alok Kumar,
Alok Kumar
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: ak225@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: ak225@snu.edu.in
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Santanu Mitra
Santanu Mitra
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: santanu.mitra@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: santanu.mitra@snu.edu.in
Search for other works by this author on:
Nishant Mishra
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: nishant.mishra@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: nishant.mishra@snu.edu.in
Anand Sagar Gupta
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: as517@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: as517@snu.edu.in
Jishnav Dawar
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: jd332@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: jd332@snu.edu.in
Alok Kumar
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: ak225@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: ak225@snu.edu.in
Santanu Mitra
Department of Mechanical Engineering,
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: santanu.mitra@snu.edu.in
Shiv Nadar University,
Gautam Buddha Nagar 201314,
Uttar Pradesh, India
e-mail: santanu.mitra@snu.edu.in
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received February 6, 2018; final manuscript received May 30, 2018; published online July 2, 2018. Assoc. Editor: Ryo Amano.
J. Energy Resour. Technol. Dec 2018, 140(12): 121201 (7 pages)
Published Online: July 2, 2018
Article history
Received:
February 6, 2018
Revised:
May 30, 2018
Citation
Mishra, N., Gupta, A. S., Dawar, J., Kumar, A., and Mitra, S. (July 2, 2018). "Numerical and Experimental Study on Performance Enhancement of Darrieus Vertical Axis Wind Turbine With Wingtip Devices." ASME. J. Energy Resour. Technol. December 2018; 140(12): 121201. https://doi.org/10.1115/1.4040506
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