This paper focuses on the processes of wind flow in the atmospheric boundary layer, to produce realistic full-scale pressures for the design of low-rise buildings. CFD with LES turbulence closure is implemented on a scale 1:1 prototype building. A proximity study was executed computationally in CFD with LES that suggests new recommendations on the computational domain size, in front of a building model, apart from common RANS-based guidelines (e.g. COST and AIJ). Our findings suggest a location of the test building, different from existing guidelines, and the inflow boundary proximity influences pressure correlation and reproduction of peak loads. The CFD LES results are compared to corresponding pressures obtained by open jet, full scale, wind tunnel, and the ASCE 7-10 standard for roof Component & Cladding design. The CFD LES shows its capability to produce peak pressures/loads on buildings, in agreement with field pressures, due to its capabilities of reproducing the spectral contents of the inflow at a 1:1 scale.
Publication Source (Journal or Book title)
Wind and Structures
Aly, A.M., Gol Zaroudi, H., “Peak pressures on low-rise buildings: CFD LES versus full-scale and wind tunnel measurements,” Wind and Structures, 30 (1), 99-117, 2020. DOI: 10.12989/was.2020.30.1.099