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Wind and Structures Volume 34, Number 3, March 2022 , pages 259-274 DOI: https://doi.org/10.12989/was.2022.34.3.259 |
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Aerodynamic shape optimization of a high-rise rectangular building with wing |
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Rajdip Paul and Sujit Kumar Dalui
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| Abstract | ||
| The present paper is focused on analyzing a set of Computational Fluid Dynamics (CFD) simulation data on reducing orthogonal peak base moment coefficients on a high-rise rectangular building with wings. The study adopts an aerodynamic optimization procedure (AOP) composed of CFD, artificial neural network (ANN), and genetic algorithm (G.A.). A parametric study is primarily accomplished by altering the wing positions with 3D transient CFD analysis using k-εturbulence models. The CFD technique is validated by taking up a wind tunnel test. The required design parameters are obtained at each design point and used for training ANN. The trained ANN models are used as surrogates to conduct optimization studies using G.A. Two single-objective optimizations are performed to minimize the peak base moment coefficients in the individual directions. An additional multiobjective optimization is implemented with the motivation of diminishing the two orthogonal peak base moments concurrently. Pareto-optimal solutions specifying the preferred building shapes are offered. | ||
| Key Words | ||
| Artificial Neural Network (ANN); computational fluid dynamics; genetic algorithm; high-rise building; multiobjective optimization; wind tunnel | ||
| Address | ||
| Rajdip Paul:Department of Civil Engineering, Hooghly Engineering & Technology College, Vivekananda Rd, Pipulpati Post, Chinsurah, West Bengal-712103, Hooghly, India Sujit Kumar Dalui:Department of Civil Engineering, Indian Institute of Engineering Science and Technology, Shibpur, P.O. Botanic Garden, Shalimar, West Bengal-711103, Howrah, India | ||