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Reliability on CFD estimation for wind-structure interaction problems
In order to estimate the potential of the technique of computational fluid dynamics (CFD) in wind and structural engineering, the predicted values of wind forces and wind-induced responses due to numerical simulations are examined from a practical point of view. Especially, the aeroelastic problems are focused on a cylinder with several kinds of sectional shapes. These bluff configurations have a possibility to generate many types of unfavorable unstable oscillations, such as vortex-induced oscillation, galloping and others. However, thus far these unsteady phenomena with different physical meanings, which can be found in various characteristic behaviors of cylinder-type structures, have not been completely understood. Based on a review of previous studies, this paper discusses the current status of the CFD technique for the prediction with regard to the response behaviors as well as the onset of a variety of unstable oscillations. In comparison with the previous experimental data, the accuracy and the limitation of the technique is clarified. Also, as a result of a detailed analysis of the computed data, a physical mechanism is established for understanding wind-structure interaction. It is also expected that further insight into unsteady phenomena can realize the reliability of CFD estimation.
Reliability on CFD estimation for wind-structure interaction problems
In order to estimate the potential of the technique of computational fluid dynamics (CFD) in wind and structural engineering, the predicted values of wind forces and wind-induced responses due to numerical simulations are examined from a practical point of view. Especially, the aeroelastic problems are focused on a cylinder with several kinds of sectional shapes. These bluff configurations have a possibility to generate many types of unfavorable unstable oscillations, such as vortex-induced oscillation, galloping and others. However, thus far these unsteady phenomena with different physical meanings, which can be found in various characteristic behaviors of cylinder-type structures, have not been completely understood. Based on a review of previous studies, this paper discusses the current status of the CFD technique for the prediction with regard to the response behaviors as well as the onset of a variety of unstable oscillations. In comparison with the previous experimental data, the accuracy and the limitation of the technique is clarified. Also, as a result of a detailed analysis of the computed data, a physical mechanism is established for understanding wind-structure interaction. It is also expected that further insight into unsteady phenomena can realize the reliability of CFD estimation.
Reliability on CFD estimation for wind-structure interaction problems
Tamura, T. (author)
1999
27 Seiten, 27 Quellen
Conference paper
English
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