Staff View: Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)

Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)

Renewable energy resources especially wind energy, have seen significant growth in the worldwide energy market as clean energy sources. This has brought attention to areas with low and moderate wind speeds. Small-scale Darrieus vertical axis wind turbine (VAWT) with omnidirectional capability captur...

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Main Authors:	Muhamad Fadhli Ramlee, Shaikh Zishan, Wan Khairul Muzammil Abd Rahim, Ahmad Fazlizan
Format:	Article
Language:	English English
Published:	CBIORE 2022
Subjects:	T1-995 Technology (General) TD1-1066 Environmental technology. Sanitary engineering
Online Access:	https://eprints.ums.edu.my/id/eprint/33438/1/Numerical%20Investigation%20of%20Solidity%20Effect%20Based%20on%20Variable%20Diameter%20on%20Power%20Performance%20of%20H-type%20Darrieus%20Vertical%20Axis%20Wind%20Turbine%20%28VAWT%29.pdf https://eprints.ums.edu.my/id/eprint/33438/2/Numerical%20Investigation%20of%20Solidity%20Effect%20Based%20on%20Variable%20Diameter%20on%20Power%20Performance%20of%20H-type%20Darrieus%20Vertical%20Axis%20Wind%20Turbine%20%28VAWT%291.pdf https://eprints.ums.edu.my/id/eprint/33438/ https://ejournal.undip.ac.id/index.php/ijred/article/view/44431 https://doi.org/10.14710/ijred.2022.44431
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spelling	my.ums.eprints.334382022-07-21T03:56:17Z https://eprints.ums.edu.my/id/eprint/33438/ Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT) Muhamad Fadhli Ramlee Shaikh Zishan Wan Khairul Muzammil Abd Rahim Ahmad Fazlizan T1-995 Technology (General) TD1-1066 Environmental technology. Sanitary engineering Renewable energy resources especially wind energy, have seen significant growth in the worldwide energy market as clean energy sources. This has brought attention to areas with low and moderate wind speeds. Small-scale Darrieus vertical axis wind turbine (VAWT) with omnidirectional capability captures potential energy in these areas at a cost-effective scale. Numerous studies have been conducted to optimise their design, hence improving the performance of these turbines. Turbine solidity, σ, representing the ratio of the overall area of the blades over the swept area of the turbine, is one of the influential geometrical factors that significantly affect wind turbine performance. Previous studies on solidity focused on the number of blades and blade length variations, while the study on turbine diameter is limited. Hence, this paper intends to numerically investigate the effect of solidity that corresponds to different turbine diameters. Power performance and flow characteristics are investigated closely according to different solidity, σ and tip speed ratios, λ using high-fidelity computational fluid dynamic (CFD) method, which solves the unsteady Reynolds-Averaged Navier-Stokes (RANS) equations. Solidity and tip speed ratios vary within a wide range of 0.3 – 0.7 and 0.5 – 4.5, respectively. The results show that decreasing the turbine solidity from 0.7 to 0.3 could significantly increase the maximum power coefficient, Cp, by 30%. However, turbine with high solidity (σ = 0.7) generate much higher instantaneous moment coefficient, Cm than the low solidity turbine (σ = 0.3), but at lower λ and a narrower range of λ. The difference in turbine's performance between high and low solidity turbine is attributed to stall experienced by the blade at low λ and the blockage effect experienced by the turbine at moderate to high λ that significantly influence the energy generation at downstream region. CBIORE 2022 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/33438/1/Numerical%20Investigation%20of%20Solidity%20Effect%20Based%20on%20Variable%20Diameter%20on%20Power%20Performance%20of%20H-type%20Darrieus%20Vertical%20Axis%20Wind%20Turbine%20%28VAWT%29.pdf text en https://eprints.ums.edu.my/id/eprint/33438/2/Numerical%20Investigation%20of%20Solidity%20Effect%20Based%20on%20Variable%20Diameter%20on%20Power%20Performance%20of%20H-type%20Darrieus%20Vertical%20Axis%20Wind%20Turbine%20%28VAWT%291.pdf Muhamad Fadhli Ramlee and Shaikh Zishan and Wan Khairul Muzammil Abd Rahim and Ahmad Fazlizan (2022) Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT). International Journal of Renewable Energy Development, 11. pp. 647-660. ISSN 2252-4940 https://ejournal.undip.ac.id/index.php/ijred/article/view/44431 https://doi.org/10.14710/ijred.2022.44431
institution	Universiti Malaysia Sabah
building	UMS Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sabah
content_source	UMS Institutional Repository
url_provider	http://eprints.ums.edu.my/
language	English English
topic	T1-995 Technology (General) TD1-1066 Environmental technology. Sanitary engineering
spellingShingle	T1-995 Technology (General) TD1-1066 Environmental technology. Sanitary engineering Muhamad Fadhli Ramlee Shaikh Zishan Wan Khairul Muzammil Abd Rahim Ahmad Fazlizan Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)
description	Renewable energy resources especially wind energy, have seen significant growth in the worldwide energy market as clean energy sources. This has brought attention to areas with low and moderate wind speeds. Small-scale Darrieus vertical axis wind turbine (VAWT) with omnidirectional capability captures potential energy in these areas at a cost-effective scale. Numerous studies have been conducted to optimise their design, hence improving the performance of these turbines. Turbine solidity, σ, representing the ratio of the overall area of the blades over the swept area of the turbine, is one of the influential geometrical factors that significantly affect wind turbine performance. Previous studies on solidity focused on the number of blades and blade length variations, while the study on turbine diameter is limited. Hence, this paper intends to numerically investigate the effect of solidity that corresponds to different turbine diameters. Power performance and flow characteristics are investigated closely according to different solidity, σ and tip speed ratios, λ using high-fidelity computational fluid dynamic (CFD) method, which solves the unsteady Reynolds-Averaged Navier-Stokes (RANS) equations. Solidity and tip speed ratios vary within a wide range of 0.3 – 0.7 and 0.5 – 4.5, respectively. The results show that decreasing the turbine solidity from 0.7 to 0.3 could significantly increase the maximum power coefficient, Cp, by 30%. However, turbine with high solidity (σ = 0.7) generate much higher instantaneous moment coefficient, Cm than the low solidity turbine (σ = 0.3), but at lower λ and a narrower range of λ. The difference in turbine's performance between high and low solidity turbine is attributed to stall experienced by the blade at low λ and the blockage effect experienced by the turbine at moderate to high λ that significantly influence the energy generation at downstream region.
format	Article
author	Muhamad Fadhli Ramlee Shaikh Zishan Wan Khairul Muzammil Abd Rahim Ahmad Fazlizan
author_facet	Muhamad Fadhli Ramlee Shaikh Zishan Wan Khairul Muzammil Abd Rahim Ahmad Fazlizan
author_sort	Muhamad Fadhli Ramlee
title	Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)
title_short	Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)
title_full	Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)
title_fullStr	Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)
title_full_unstemmed	Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)
title_sort	numerical investigation of solidity effect based on variable diameter on power performance of h-type darrieus vertical axis wind turbine (vawt)
publisher	CBIORE
publishDate	2022
url	https://eprints.ums.edu.my/id/eprint/33438/1/Numerical%20Investigation%20of%20Solidity%20Effect%20Based%20on%20Variable%20Diameter%20on%20Power%20Performance%20of%20H-type%20Darrieus%20Vertical%20Axis%20Wind%20Turbine%20%28VAWT%29.pdf https://eprints.ums.edu.my/id/eprint/33438/2/Numerical%20Investigation%20of%20Solidity%20Effect%20Based%20on%20Variable%20Diameter%20on%20Power%20Performance%20of%20H-type%20Darrieus%20Vertical%20Axis%20Wind%20Turbine%20%28VAWT%291.pdf https://eprints.ums.edu.my/id/eprint/33438/ https://ejournal.undip.ac.id/index.php/ijred/article/view/44431 https://doi.org/10.14710/ijred.2022.44431
_version_	1760231163821031424
score	13.211869

Numerical Investigation of Solidity Effect Based on Variable Diameter on Power Performance of H-type Darrieus Vertical Axis Wind Turbine (VAWT)

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