Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades
The current trends of wind turbine blade designs are geared towards a longer and slender blade with high flexibility, exhibiting complex aeroelastic loadings and instability issues, including flutter; in this regard, fluid-structure interaction (FSI) plays a significant role. The present article wil...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/10/10/1499 |
| _version_ | 1818038038363635712 |
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| author | Mesfin Belayneh Ageze Yefa Hu Huachun Wu |
| author_facet | Mesfin Belayneh Ageze Yefa Hu Huachun Wu |
| author_sort | Mesfin Belayneh Ageze |
| collection | DOAJ |
| description | The current trends of wind turbine blade designs are geared towards a longer and slender blade with high flexibility, exhibiting complex aeroelastic loadings and instability issues, including flutter; in this regard, fluid-structure interaction (FSI) plays a significant role. The present article will conduct a comparative study between uni-directional and bi-directional fluid-structural coupling models for a horizontal axis wind turbine. A full-scale, geometric copy of the NREL 5MW blade with simplified material distribution is considered for simulation. Analytical formulations of the governing relations with appropriate approximation are highlighted, including turbulence model, i.e., Shear Stress Transport (SST) k-ω. These analytical relations are implemented using Multiphysics package ANSYS employing Fluent module (Computational Fluid Dynamics (CFD)-based solver) for the fluid domain and Transient Structural module (Finite Element Analysis-based solver) for the structural domain. ANSYS system coupling module also is configured to model the two fluid-structure coupling methods. The rated operational condition of the blade for a full cycle rotation is considered as a comparison domain. In the bi-directional coupling model, the structural deformation alters the angle of attack from the designed values, and by extension the flow pattern along the blade span; furthermore, the tip deflection keeps fluctuating whilst it tends to stabilize in the uni-directional coupling model. |
| first_indexed | 2024-12-10T07:36:23Z |
| format | Article |
| id | doaj.art-8041f822549441ef9c68753350796d9e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-12-10T07:36:23Z |
| publishDate | 2017-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8041f822549441ef9c68753350796d9e2022-12-22T01:57:25ZengMDPI AGEnergies1996-10732017-09-011010149910.3390/en10101499en10101499Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine BladesMesfin Belayneh Ageze0Yefa Hu1Huachun Wu2School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, ChinaThe current trends of wind turbine blade designs are geared towards a longer and slender blade with high flexibility, exhibiting complex aeroelastic loadings and instability issues, including flutter; in this regard, fluid-structure interaction (FSI) plays a significant role. The present article will conduct a comparative study between uni-directional and bi-directional fluid-structural coupling models for a horizontal axis wind turbine. A full-scale, geometric copy of the NREL 5MW blade with simplified material distribution is considered for simulation. Analytical formulations of the governing relations with appropriate approximation are highlighted, including turbulence model, i.e., Shear Stress Transport (SST) k-ω. These analytical relations are implemented using Multiphysics package ANSYS employing Fluent module (Computational Fluid Dynamics (CFD)-based solver) for the fluid domain and Transient Structural module (Finite Element Analysis-based solver) for the structural domain. ANSYS system coupling module also is configured to model the two fluid-structure coupling methods. The rated operational condition of the blade for a full cycle rotation is considered as a comparison domain. In the bi-directional coupling model, the structural deformation alters the angle of attack from the designed values, and by extension the flow pattern along the blade span; furthermore, the tip deflection keeps fluctuating whilst it tends to stabilize in the uni-directional coupling model.https://www.mdpi.com/1996-1073/10/10/1499wind turbinefluid structure interaction (FSI)aeroelasticity |
| spellingShingle | Mesfin Belayneh Ageze Yefa Hu Huachun Wu Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades Energies wind turbine fluid structure interaction (FSI) aeroelasticity |
| title | Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades |
| title_full | Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades |
| title_fullStr | Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades |
| title_full_unstemmed | Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades |
| title_short | Comparative Study on Uni- and Bi-Directional Fluid Structure Coupling of Wind Turbine Blades |
| title_sort | comparative study on uni and bi directional fluid structure coupling of wind turbine blades |
| topic | wind turbine fluid structure interaction (FSI) aeroelasticity |
| url | https://www.mdpi.com/1996-1073/10/10/1499 |
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