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A platform for research: civil engineering, architecture and urbanism
Validation of Computational Wind Engineering Techniques for Tall Buildings
Wind plays a decisive role in the design of the human environment, particularly in the con- ception and planning of high-rise buildings. Due to the global trend towards ever slender and lighter constructions, they are increasingly exposed to complex wind excited vibrations, which confront engineers with great challenges. Whilst these forces have so far mostly been determined experimentally in wind tunnels, nu- merical methods of flow simulation are now increasingly finding their way into the discipline of wind engineering. In addition to wind tunnel investigations, they already play an important role in the automotive and aircraft industries. The research objective of this work is the validation of a computational fluid dynamics simula- tion on the basis of a model high-rise, which was experimentally investigated in an international benchmark study by different wind tunnel institutions. First, the natural wind conditions are generated synthetically. The resulting turbulent flow is investigated in detail and serves as the basis for the numerical wind tunnel. Subsequently, the aerodynamic forces acting on the building in different wind directions are determined by means of a large eddy simulation. In order to extend the available computing power, the simulations were carried out in cooperation with the Chair of Computer Architecture and Parallel Systems on the Google Cloud Computing platform. Finally, the dynamic structural response is investigated. For this purpose, on the one hand the finite element method is used, on the other hand the spectral analysis method which is also used in wind tunnel investigations is applied.
Validation of Computational Wind Engineering Techniques for Tall Buildings
Wind plays a decisive role in the design of the human environment, particularly in the con- ception and planning of high-rise buildings. Due to the global trend towards ever slender and lighter constructions, they are increasingly exposed to complex wind excited vibrations, which confront engineers with great challenges. Whilst these forces have so far mostly been determined experimentally in wind tunnels, nu- merical methods of flow simulation are now increasingly finding their way into the discipline of wind engineering. In addition to wind tunnel investigations, they already play an important role in the automotive and aircraft industries. The research objective of this work is the validation of a computational fluid dynamics simula- tion on the basis of a model high-rise, which was experimentally investigated in an international benchmark study by different wind tunnel institutions. First, the natural wind conditions are generated synthetically. The resulting turbulent flow is investigated in detail and serves as the basis for the numerical wind tunnel. Subsequently, the aerodynamic forces acting on the building in different wind directions are determined by means of a large eddy simulation. In order to extend the available computing power, the simulations were carried out in cooperation with the Chair of Computer Architecture and Parallel Systems on the Google Cloud Computing platform. Finally, the dynamic structural response is investigated. For this purpose, on the one hand the finite element method is used, on the other hand the spectral analysis method which is also used in wind tunnel investigations is applied.
Validation of Computational Wind Engineering Techniques for Tall Buildings
Strahm, Benedikt (author)
2019-10-07
Article (Journal)
Electronic Resource
English
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