Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine
Developing reliable tidal-energy turbines of a large size and capacity links to preservation of the structural safety and stability of the blades. In this study, a bidirectional fluid–structure coupling method was applied to analyze the hydrodynamic performance and structural characteristics of the...
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MDPI AG
2022-10-01
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| Series: | Mathematics |
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| Online Access: | https://www.mdpi.com/2227-7390/10/19/3674 |
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| author | Yuquan Zhang Zhiqiang Liu Chengyi Li Xuemei Wang Yuan Zheng Zhi Zhang Emmanuel Fernandez-Rodriguez Rabea Jamil Mahfoud |
| author_facet | Yuquan Zhang Zhiqiang Liu Chengyi Li Xuemei Wang Yuan Zheng Zhi Zhang Emmanuel Fernandez-Rodriguez Rabea Jamil Mahfoud |
| author_sort | Yuquan Zhang |
| collection | DOAJ |
| description | Developing reliable tidal-energy turbines of a large size and capacity links to preservation of the structural safety and stability of the blades. In this study, a bidirectional fluid–structure coupling method was applied to analyze the hydrodynamic performance and structural characteristics of the blade of a tidal-stream turbine. Analyses were conducted on the transient and stable structural stresses, fatigue, and deformations under the influence of water depth and turbine rotational speed. The performance predictions with and without fluid–structure coupling are similar to measurements. The water-depth change has little effect on the stress and deformation change of the blade, while the turbine-speed change has the most significant effect on it. When the turbine just starts, the blade will be subject to a sudden change load. This is due to the increase in turbine speed, resulting in the sudden load. Similar to the trend of blade stress, the blade safety factor is lower near the root of the blade, and the turbine-speed change has a more significant impact on the blade structure’s safety. However, the number of stress cycles in the blade at different rotational speeds is within the safety range. |
| first_indexed | 2024-03-09T21:28:05Z |
| format | Article |
| id | doaj.art-ec6ff3d2dc254e3393d364c2569de5a3 |
| institution | Directory Open Access Journal |
| issn | 2227-7390 |
| language | English |
| last_indexed | 2024-03-09T21:28:05Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mathematics |
| spelling | doaj.art-ec6ff3d2dc254e3393d364c2569de5a32023-11-23T21:05:29ZengMDPI AGMathematics2227-73902022-10-011019367410.3390/math10193674Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream TurbineYuquan Zhang0Zhiqiang Liu1Chengyi Li2Xuemei Wang3Yuan Zheng4Zhi Zhang5Emmanuel Fernandez-Rodriguez6Rabea Jamil Mahfoud7College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, ChinaCollege of Energy and Electrical Engineering, Hohai University, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaChongqing Jiangjin Shipbuilding Industry Co., Ltd., Chongqing 402263, ChinaCollege of Energy and Electrical Engineering, Hohai University, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaTechnological Institute of Merida, Technological Avenue, Merida 97118, MexicoCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaDeveloping reliable tidal-energy turbines of a large size and capacity links to preservation of the structural safety and stability of the blades. In this study, a bidirectional fluid–structure coupling method was applied to analyze the hydrodynamic performance and structural characteristics of the blade of a tidal-stream turbine. Analyses were conducted on the transient and stable structural stresses, fatigue, and deformations under the influence of water depth and turbine rotational speed. The performance predictions with and without fluid–structure coupling are similar to measurements. The water-depth change has little effect on the stress and deformation change of the blade, while the turbine-speed change has the most significant effect on it. When the turbine just starts, the blade will be subject to a sudden change load. This is due to the increase in turbine speed, resulting in the sudden load. Similar to the trend of blade stress, the blade safety factor is lower near the root of the blade, and the turbine-speed change has a more significant impact on the blade structure’s safety. However, the number of stress cycles in the blade at different rotational speeds is within the safety range.https://www.mdpi.com/2227-7390/10/19/3674tidal stream turbineCFDfatigue lifefluid–structure interactionblade safety factor |
| spellingShingle | Yuquan Zhang Zhiqiang Liu Chengyi Li Xuemei Wang Yuan Zheng Zhi Zhang Emmanuel Fernandez-Rodriguez Rabea Jamil Mahfoud Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine Mathematics tidal stream turbine CFD fatigue life fluid–structure interaction blade safety factor |
| title | Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine |
| title_full | Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine |
| title_fullStr | Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine |
| title_full_unstemmed | Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine |
| title_short | Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine |
| title_sort | fluid structure interaction modeling of structural loads and fatigue life analysis of tidal stream turbine |
| topic | tidal stream turbine CFD fatigue life fluid–structure interaction blade safety factor |
| url | https://www.mdpi.com/2227-7390/10/19/3674 |
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