Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Computational analysis of aerothermal characteristics of skygardens and comparative assessment of different attenuators

Murtaza Mohammadi, Paige Wenbin Tien, John Kaiser Calautit
University of Nottingham, United Kingdom

Abstract: Buildings consisting of vegetative measures, such as green roofs and skygardens hold multiple benefits including improvements in the local microclimate, attenuating noise and air pollution, and physiological wellbeing. Nevertheless, skygardens located on high levels, may be exposed to high wind speeds, endangering the safety of occupants. Despite its popularity, very few studies have investigated the aero-thermal characteristics of such outdoor spaces and the influence of surrounding vegetation. This study utilises Computational Fluid Dynamics (CFD) to analyse 3 types of wind buffers on the wind characteristics of a skygarden located on a high-rise building. The Realizable k-e setup was employed where the vegetation was modelled as a porous zone. Results indicate that not all types of barriers can generate comfortable environment within the region, and taller barriers provide more conducive environment. Porous barriers can attenuate wind speeds in the depth as well as the height of the space, while also producing some local cooling.
Keywords: Skygarden, wind comfort, high-rise building, computational fluid dynamics (CFD), vegetation
Pages: 2734 - 2740