Study on Elastic Response of Double-Rotor VAWTs
This study investigates the elastic response characteristics of a floating wind turbine (FOWT) with two vertical-axis wind turbines (VAWTs), called double-rotor VAWTs. The model consists of two VAWTs mounted on a single semi-submersible floating structure and employs a single point mooring, which al...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/10/10/1400 |
| _version_ | 1827649651201802240 |
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| author | Saika Iwamatsu Hideyuki Suzuki Yasunori Nihei |
| author_facet | Saika Iwamatsu Hideyuki Suzuki Yasunori Nihei |
| author_sort | Saika Iwamatsu |
| collection | DOAJ |
| description | This study investigates the elastic response characteristics of a floating wind turbine (FOWT) with two vertical-axis wind turbines (VAWTs), called double-rotor VAWTs. The model consists of two VAWTs mounted on a single semi-submersible floating structure and employs a single point mooring, which allows the FOWT to always self-align with the wind. Usually, a coupled analysis of the wind turbine and floating structure is used in the design of FOWTs; however, there is no coupled analysis available for VAWTs. In this study, we attempted to combine the wind turbine design software “QBlade” and the coupled wind turbine/floating body analysis code “UTWind” as one of the methods of coupled analysis of a VAWT and a floating body. Numerical simulation results were compared with experimental results using an elastic model scaled down to 1/100 of its actual model to determine the motion response and cross-sectional bending moments. The experimental results showed that the thrust of the VAWT had a particular influence on the cross-sectional forces and motion response between the two VAWTs. For cross-sectional forces, all results showed similar trends. Overall, the results of UTWind for double-rotor VAWTs are reasonable. It was also found that the pitch motion must be accurately reproduced to improve the accuracy. |
| first_indexed | 2024-03-09T20:00:43Z |
| format | Article |
| id | doaj.art-2d62c45cfd714dd8bca60a0d7ce1cff2 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T20:00:43Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-2d62c45cfd714dd8bca60a0d7ce1cff22023-11-24T00:43:39ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-09-011010140010.3390/jmse10101400Study on Elastic Response of Double-Rotor VAWTsSaika Iwamatsu0Hideyuki Suzuki1Yasunori Nihei2Marine Hydrodynamics Laboratory, Department of Aerospace and Marine System Engineering, Osaka Prefecture University, Osaka 599-8531, JapanOcean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo, Tokyo 106-0032, JapanMarine Hydrodynamics Laboratory, Department of Aerospace and Marine System Engineering, Osaka Metropolitan University, Osaka 599-8531, JapanThis study investigates the elastic response characteristics of a floating wind turbine (FOWT) with two vertical-axis wind turbines (VAWTs), called double-rotor VAWTs. The model consists of two VAWTs mounted on a single semi-submersible floating structure and employs a single point mooring, which allows the FOWT to always self-align with the wind. Usually, a coupled analysis of the wind turbine and floating structure is used in the design of FOWTs; however, there is no coupled analysis available for VAWTs. In this study, we attempted to combine the wind turbine design software “QBlade” and the coupled wind turbine/floating body analysis code “UTWind” as one of the methods of coupled analysis of a VAWT and a floating body. Numerical simulation results were compared with experimental results using an elastic model scaled down to 1/100 of its actual model to determine the motion response and cross-sectional bending moments. The experimental results showed that the thrust of the VAWT had a particular influence on the cross-sectional forces and motion response between the two VAWTs. For cross-sectional forces, all results showed similar trends. Overall, the results of UTWind for double-rotor VAWTs are reasonable. It was also found that the pitch motion must be accurately reproduced to improve the accuracy.https://www.mdpi.com/2077-1312/10/10/1400vertical-axis wind turbinefloating offshore wind turbineelastic characteristics |
| spellingShingle | Saika Iwamatsu Hideyuki Suzuki Yasunori Nihei Study on Elastic Response of Double-Rotor VAWTs Journal of Marine Science and Engineering vertical-axis wind turbine floating offshore wind turbine elastic characteristics |
| title | Study on Elastic Response of Double-Rotor VAWTs |
| title_full | Study on Elastic Response of Double-Rotor VAWTs |
| title_fullStr | Study on Elastic Response of Double-Rotor VAWTs |
| title_full_unstemmed | Study on Elastic Response of Double-Rotor VAWTs |
| title_short | Study on Elastic Response of Double-Rotor VAWTs |
| title_sort | study on elastic response of double rotor vawts |
| topic | vertical-axis wind turbine floating offshore wind turbine elastic characteristics |
| url | https://www.mdpi.com/2077-1312/10/10/1400 |
| work_keys_str_mv | AT saikaiwamatsu studyonelasticresponseofdoublerotorvawts AT hideyukisuzuki studyonelasticresponseofdoublerotorvawts AT yasunorinihei studyonelasticresponseofdoublerotorvawts |