BUILDING AERODYNAMICS AND SHAPE OPTIMISATION

Abstract

This study   is based on the topic building aerodynamics and shape optimization . Usually, the aerodynamic considerations are not taken into account while designing the external shape and orientation of building. The main considerations are architectural considerations, functional requirements and site limitations. As a result, the structures become bluff bodies with strong wind-structure interaction produced loads.These can be reduced by using aerodynamic mitigation techniques and shape optimization procedure. This report reviews the old/recent work on aerodynamic mitigation techniques evolved for diminishing the wind loads on buildings by modifying their shape and/or adding some simple architectural elements. This research examines aerodynamic mitigating solutions for both low-rise and high-rise structures. Aerodynamic shape optimization techniques for tall buildings for reducing the wind load are also included and the suitability and challenges of using Computational Fluid Dynamics (CFD) for this application were discussed. Gradient based methods and non-gradient based methods are the overview of optimization techniques. This report will surely help in using the aerodynamic shape and consideration of the structures’ shape, in terms of wind performance, early in the design process.  This report also help in using various techniques that can be used for reducing wind loads on buildings.