A New Analytical Wake Model for Yawed Wind Turbines
A new analytical wake model for wind turbines, considering ambient turbulence intensity, thrust coefficient and yaw angle effects, is proposed from numerical and analytical studies. First, eight simulations by the Reynolds Stress Model are conducted for different thrust coefficients, yaw angles and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-03-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/3/665 |
| _version_ | 1818006992005890048 |
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| author | Guo-Wei Qian Takeshi Ishihara |
| author_facet | Guo-Wei Qian Takeshi Ishihara |
| author_sort | Guo-Wei Qian |
| collection | DOAJ |
| description | A new analytical wake model for wind turbines, considering ambient turbulence intensity, thrust coefficient and yaw angle effects, is proposed from numerical and analytical studies. First, eight simulations by the Reynolds Stress Model are conducted for different thrust coefficients, yaw angles and ambient turbulence intensities. The wake deflection, mean velocity and turbulence intensity in the wakes are systematically investigated. A new wake deflection model is then proposed to analytically predict the wake center trajectory in the yawed condition. Finally, the effects of yaw angle are incorporated in the Gaussian-based wake model. The wake deflection, velocity deficit and added turbulence intensity in the wake predicted by the proposed model show good agreement with the numerical results. The model parameters are determined as the function of ambient turbulence intensity and thrust coefficient, which enables the model to have good applicability under various conditions. |
| first_indexed | 2024-04-14T05:08:06Z |
| format | Article |
| id | doaj.art-21ca89cdb95a46d59776a962564e34ff |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-14T05:08:06Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-21ca89cdb95a46d59776a962564e34ff2022-12-22T02:10:37ZengMDPI AGEnergies1996-10732018-03-0111366510.3390/en11030665en11030665A New Analytical Wake Model for Yawed Wind TurbinesGuo-Wei Qian0Takeshi Ishihara1Department of Civil Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanDepartment of Civil Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanA new analytical wake model for wind turbines, considering ambient turbulence intensity, thrust coefficient and yaw angle effects, is proposed from numerical and analytical studies. First, eight simulations by the Reynolds Stress Model are conducted for different thrust coefficients, yaw angles and ambient turbulence intensities. The wake deflection, mean velocity and turbulence intensity in the wakes are systematically investigated. A new wake deflection model is then proposed to analytically predict the wake center trajectory in the yawed condition. Finally, the effects of yaw angle are incorporated in the Gaussian-based wake model. The wake deflection, velocity deficit and added turbulence intensity in the wake predicted by the proposed model show good agreement with the numerical results. The model parameters are determined as the function of ambient turbulence intensity and thrust coefficient, which enables the model to have good applicability under various conditions.http://www.mdpi.com/1996-1073/11/3/665wind turbine wakewake deflectionvelocity deficitadded turbulence intensityambient turbulencethrust coefficientyaw angle |
| spellingShingle | Guo-Wei Qian Takeshi Ishihara A New Analytical Wake Model for Yawed Wind Turbines Energies wind turbine wake wake deflection velocity deficit added turbulence intensity ambient turbulence thrust coefficient yaw angle |
| title | A New Analytical Wake Model for Yawed Wind Turbines |
| title_full | A New Analytical Wake Model for Yawed Wind Turbines |
| title_fullStr | A New Analytical Wake Model for Yawed Wind Turbines |
| title_full_unstemmed | A New Analytical Wake Model for Yawed Wind Turbines |
| title_short | A New Analytical Wake Model for Yawed Wind Turbines |
| title_sort | new analytical wake model for yawed wind turbines |
| topic | wind turbine wake wake deflection velocity deficit added turbulence intensity ambient turbulence thrust coefficient yaw angle |
| url | http://www.mdpi.com/1996-1073/11/3/665 |
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