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Open AccessArticle

LES and Wind Tunnel Test of Flow around Two Tall Buildings in Staggered Arrangement

by Gongbo Zu 1,* and Kit Ming Lam 2
Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
Author to whom correspondence should be addressed.
Computation 2018, 6(2), 28;
Received: 30 January 2018 / Revised: 19 March 2018 / Accepted: 20 March 2018 / Published: 23 March 2018
(This article belongs to the Special Issue Computational Methods in Wind Engineering)
Wind flow structures and their consequent wind loads on two high-rise buildings in staggered arrangement are investigated by Large Eddy Simulation (LES). Synchronized pressure and flow field measurements by particle image velocimetry (PIV) are conducted in a boundary layer wind tunnel to validate the numerical simulations. The instantaneous and time-averaged flow fields are analyzed and discussed in detail. The coherent flow structures in the building gap are clearly observed and the upstream building wake is found to oscillate sideways and meander down to the downstream building in a coherent manner. The disruptive effect on the downstream building wake induced by the upstream building is also observed. Furthermore, the connection between the upstream building wake and the wind loads on the downstream building is explored by the simultaneous data of wind pressures and wind flow fields. View Full-Text
Keywords: LES; high-rise buildings; wake; interference effect; PIV LES; high-rise buildings; wake; interference effect; PIV
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Zu, G.; Lam, K.M. LES and Wind Tunnel Test of Flow around Two Tall Buildings in Staggered Arrangement. Computation 2018, 6, 28.

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