Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine
Orthopter-type Vertical Axis Wind Turbines (O-VAWT) are energy capturing devices which are suitable for micro-generation in urban areas. This paper aims to study the effect of number of blades (solidity), Aspect Ratio (AR), and wind speed on the performance of a small-scale O-VAWT using experimental...
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2018
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| Online Access: | http://hdl.handle.net/10725/12940 https://doi.org/10.1016/j.jweia.2018.07.008 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S0167610518302538 |
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| _version_ | 1864513490418401280 |
|---|---|
| author | ElCheikh, A. |
| author2 | Elkhoury, M. Kiwata, T. Kono, T. |
| author2_role | author author author |
| author_facet | ElCheikh, A. Elkhoury, M. Kiwata, T. Kono, T. |
| author_role | author |
| dc.contributor.none.fl_str_mv | as |
| dc.creator.none.fl_str_mv | ElCheikh, A. Elkhoury, M. Kiwata, T. Kono, T. |
| dc.date.none.fl_str_mv | 2018 2021-07-13T10:32:42Z 2021-07-13T10:32:42Z 2021-07-13 |
| dc.identifier.none.fl_str_mv | 0167-6105 http://hdl.handle.net/10725/12940 https://doi.org/10.1016/j.jweia.2018.07.008 ElCheikh, A., Elkhoury, M., Kiwata, T., & Kono, T. (2018). Performance analysis of a small-scale orthopter-type vertical axis wind turbine. Journal of Wind Engineering and Industrial Aerodynamics, 180, 19-33. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S0167610518302538 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Journal of Wind Engineering and Industrial Aerodynamics |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Orthopter-type Vertical Axis Wind Turbines (O-VAWT) are energy capturing devices which are suitable for micro-generation in urban areas. This paper aims to study the effect of number of blades (solidity), Aspect Ratio (AR), and wind speed on the performance of a small-scale O-VAWT using experimental and numerical techniques. Wind tunnel experiments were carried out to measure the torque of two-, three, and four-bladed turbine, each at a set of different wind speeds and blade aspect ratios. Increasing solidity was achieved by either decreasing the blade aspect ratio or increasing the number of blades, both resulting in a higher peak power coefficient (Cp,max) of the VAWT. The startup characteristics of the O-VAWT were also examined at different aspect ratios, and showed its capability to start-up even at low wind speeds. In addition, numerical simulations were carried out using an unsteady three-dimensional Delayed Detached Eddy Simulation (DDES) with Spalart Allmaras model. Numerical results of power coefficient were validated by comparison against available experimental data. Moreover, velocity and vorticity contours for the two-, three-, and four-bladed turbines, and pressure contours at different span-wise locations were thoroughly analyzed to link the flow field aerodynamics to relevant changes in power coefficient for different rotor solidities. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_28c2b2741c885d933d821ea4d96eb5ff |
| identifier_str_mv | 0167-6105 ElCheikh, A., Elkhoury, M., Kiwata, T., & Kono, T. (2018). Performance analysis of a small-scale orthopter-type vertical axis wind turbine. Journal of Wind Engineering and Industrial Aerodynamics, 180, 19-33. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/12940 |
| publishDate | 2018 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind TurbineElCheikh, A.Elkhoury, M.Kiwata, T.Kono, T.Orthopter-type Vertical Axis Wind Turbines (O-VAWT) are energy capturing devices which are suitable for micro-generation in urban areas. This paper aims to study the effect of number of blades (solidity), Aspect Ratio (AR), and wind speed on the performance of a small-scale O-VAWT using experimental and numerical techniques. Wind tunnel experiments were carried out to measure the torque of two-, three, and four-bladed turbine, each at a set of different wind speeds and blade aspect ratios. Increasing solidity was achieved by either decreasing the blade aspect ratio or increasing the number of blades, both resulting in a higher peak power coefficient (Cp,max) of the VAWT. The startup characteristics of the O-VAWT were also examined at different aspect ratios, and showed its capability to start-up even at low wind speeds. In addition, numerical simulations were carried out using an unsteady three-dimensional Delayed Detached Eddy Simulation (DDES) with Spalart Allmaras model. Numerical results of power coefficient were validated by comparison against available experimental data. Moreover, velocity and vorticity contours for the two-, three-, and four-bladed turbines, and pressure contours at different span-wise locations were thoroughly analyzed to link the flow field aerodynamics to relevant changes in power coefficient for different rotor solidities.Publishedas2021-07-13T10:32:42Z2021-07-13T10:32:42Z20182021-07-13Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0167-6105http://hdl.handle.net/10725/12940https://doi.org/10.1016/j.jweia.2018.07.008ElCheikh, A., Elkhoury, M., Kiwata, T., & Kono, T. (2018). Performance analysis of a small-scale orthopter-type vertical axis wind turbine. Journal of Wind Engineering and Industrial Aerodynamics, 180, 19-33.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttps://www.sciencedirect.com/science/article/pii/S0167610518302538enJournal of Wind Engineering and Industrial Aerodynamicsinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/129402021-11-01T13:33:52Z |
| spellingShingle | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine ElCheikh, A. |
| status_str | publishedVersion |
| title | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| title_full | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| title_fullStr | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| title_full_unstemmed | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| title_short | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| title_sort | Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine |
| url | http://hdl.handle.net/10725/12940 https://doi.org/10.1016/j.jweia.2018.07.008 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S0167610518302538 |