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Fluid-structure interaction and stress analysis of a floating wind turbine
Abstract In this paper, we describe a method to investigate the fluid-structure interaction of a floating wind turbine and to analyze the global deformations and the corresponding stresses with a detailed finite element model. To solve the fluid-structure interaction problem, a partitioned approach is chosen. The in-house C++ library comana, which was developed to solve multi-physic problems by coupling existing solvers, is extended to couple the fluid solver panMARE and the structural solver ANSYS. The significance of the interaction of structural deformations and the fluid loads is pointed out for the rotor of the wind turbine. In order to enable the use of a detailed finite element model in the fluid-structure interaction simulation, a model reduction method is applied in ANSYS. As a result, an efficient stress analysis can be performed under consideration of the fluid-structure interaction.
Highlights The partitioned approach is used for a fluid-structure interaction (FSI) simulation. A predictor and a convergence acceleration ensure a stable coupling of the solvers. PanMARE and ANSYS are employed for the FSI simulation of a floating wind turbine. Superelements are created in ANSYS which enable the use of detailed FE models. A detailed stress analysis during an extreme wave event is carried out.
Fluid-structure interaction and stress analysis of a floating wind turbine
Abstract In this paper, we describe a method to investigate the fluid-structure interaction of a floating wind turbine and to analyze the global deformations and the corresponding stresses with a detailed finite element model. To solve the fluid-structure interaction problem, a partitioned approach is chosen. The in-house C++ library comana, which was developed to solve multi-physic problems by coupling existing solvers, is extended to couple the fluid solver panMARE and the structural solver ANSYS. The significance of the interaction of structural deformations and the fluid loads is pointed out for the rotor of the wind turbine. In order to enable the use of a detailed finite element model in the fluid-structure interaction simulation, a model reduction method is applied in ANSYS. As a result, an efficient stress analysis can be performed under consideration of the fluid-structure interaction.
Highlights The partitioned approach is used for a fluid-structure interaction (FSI) simulation. A predictor and a convergence acceleration ensure a stable coupling of the solvers. PanMARE and ANSYS are employed for the FSI simulation of a floating wind turbine. Superelements are created in ANSYS which enable the use of detailed FE models. A detailed stress analysis during an extreme wave event is carried out.
Fluid-structure interaction and stress analysis of a floating wind turbine
Wiegard, B. (author) / König, M. (author) / Lund, J. (author) / Radtke, L. (author) / Netzband, S. (author) / Abdel-Maksoud, M. (author) / Düster, A. (author)
Marine Structures ; 78
2021-02-09
Article (Journal)
Electronic Resource
English