Effect of rotor blade position on vertical axis wind turbine performance

G. Colley, R. Mishra, H. V. Rao, R. Woolhead

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

In this paper a numerical study is presented with the aim of evaluating the performance output of three Vertical Axis Wind Turbine (VAWT) configurations. Here using Computational Fluid Dynamics (CFD) a two-dimensional Multi Reference Frame (MRF) approach has been used to perform steady state simulations. For this purpose an inlet velocity of 4m/s has been used along with rotor blade tip speed ratios (λ) in the range of 0 to 0.6. The effects of varying rotor blade position on the global and local flow fields have been quantified. Furthermore, the influence of rotor blade position on performance has been computed. It has been found that within a typical rotor blade passage, maximum torque is obtained at a unique rotor angle. It can be seen that the torque output of the turbine decreases with an increase in rotor tip speed ratio (λ) for all rotor blade positions. From the data obtained it can be concluded that the VAWT power curve characteristics vary with relative rotor blade position.

Original languageEnglish
Article number449
Pages (from-to)719-724
Number of pages6
JournalRenewable Energy and Power Quality Journal
Volume1
Issue number8
DOIs
Publication statusPublished - 1 Apr 2010
EventInternational Conference on Renewable Energies and Power Quality - Granada, Spain
Duration: 23 Mar 201025 Mar 2010
http://www.icrepq.com/RE&PQJ-8.html

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Wind turbines
Turbomachine blades
Rotors
Torque
Flow fields
Computational fluid dynamics
Turbines

Cite this

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abstract = "In this paper a numerical study is presented with the aim of evaluating the performance output of three Vertical Axis Wind Turbine (VAWT) configurations. Here using Computational Fluid Dynamics (CFD) a two-dimensional Multi Reference Frame (MRF) approach has been used to perform steady state simulations. For this purpose an inlet velocity of 4m/s has been used along with rotor blade tip speed ratios (λ) in the range of 0 to 0.6. The effects of varying rotor blade position on the global and local flow fields have been quantified. Furthermore, the influence of rotor blade position on performance has been computed. It has been found that within a typical rotor blade passage, maximum torque is obtained at a unique rotor angle. It can be seen that the torque output of the turbine decreases with an increase in rotor tip speed ratio (λ) for all rotor blade positions. From the data obtained it can be concluded that the VAWT power curve characteristics vary with relative rotor blade position.",
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Effect of rotor blade position on vertical axis wind turbine performance. / Colley, G.; Mishra, R.; Rao, H. V.; Woolhead, R.

In: Renewable Energy and Power Quality Journal, Vol. 1, No. 8, 449, 01.04.2010, p. 719-724.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Effect of rotor blade position on vertical axis wind turbine performance

AU - Colley, G.

AU - Mishra, R.

AU - Rao, H. V.

AU - Woolhead, R.

PY - 2010/4/1

Y1 - 2010/4/1

N2 - In this paper a numerical study is presented with the aim of evaluating the performance output of three Vertical Axis Wind Turbine (VAWT) configurations. Here using Computational Fluid Dynamics (CFD) a two-dimensional Multi Reference Frame (MRF) approach has been used to perform steady state simulations. For this purpose an inlet velocity of 4m/s has been used along with rotor blade tip speed ratios (λ) in the range of 0 to 0.6. The effects of varying rotor blade position on the global and local flow fields have been quantified. Furthermore, the influence of rotor blade position on performance has been computed. It has been found that within a typical rotor blade passage, maximum torque is obtained at a unique rotor angle. It can be seen that the torque output of the turbine decreases with an increase in rotor tip speed ratio (λ) for all rotor blade positions. From the data obtained it can be concluded that the VAWT power curve characteristics vary with relative rotor blade position.

AB - In this paper a numerical study is presented with the aim of evaluating the performance output of three Vertical Axis Wind Turbine (VAWT) configurations. Here using Computational Fluid Dynamics (CFD) a two-dimensional Multi Reference Frame (MRF) approach has been used to perform steady state simulations. For this purpose an inlet velocity of 4m/s has been used along with rotor blade tip speed ratios (λ) in the range of 0 to 0.6. The effects of varying rotor blade position on the global and local flow fields have been quantified. Furthermore, the influence of rotor blade position on performance has been computed. It has been found that within a typical rotor blade passage, maximum torque is obtained at a unique rotor angle. It can be seen that the torque output of the turbine decreases with an increase in rotor tip speed ratio (λ) for all rotor blade positions. From the data obtained it can be concluded that the VAWT power curve characteristics vary with relative rotor blade position.

KW - Computational Fluid Dynamics

KW - Performance

KW - Pressure field

KW - Torque

KW - Vertical axis wind turbine

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