Effects on surface roughness for wind pressure on glass and cladding of buildings

CFD simulation of wind-induced pressure coefficients on buildings with and without balconies: Validation and sensitivity analysis

“…The pressure distribution on building walls is influenced by a wide range of factors including approach-flow conditions [11][12][13], urban surroundings [14], building geometry [1] and wind direction [15]. In particular, building facade details such as balconies and other protrusions can affect the peak and mean surface pressure distributions on buildings walls and roofs [16][17][18].…”

Key Structural Aspects for Adaptive Facades - Activity Progress from the EU-COST Action TU1403 ‘Structural’ Task Group

“…Also, under wind loads, moving parts can cause changes in airflow, especially in the case of highrise buildings which may require subsequent verification of the building model behavior in the wind tunnel. Marutaa et al (1998) reported experimental data for a model in scale 1/300 of the high-rise house square section and 75m high that wind pressures are significantly affected by the surface roughness, particularly near the leading edge of the side wall on which local severe peak pressures decrease with increasing roughness. The increase of roughness reduces the development of conical vortices formed at the lower and higher zone of buildings.…”

The Wind Characteristics of Tall Cylinder Buildings with Vertical-Grooves

“…Both the experiments and numerical simulations are employed to investigate the pressure on the surface of the circular cylinders since the pressure is the most direct action on the body resistance to the fluid [1,13,14]. Due to the presence of rough elements and the grooves, the maximum pressure occurs around  = 90°,which means that the location of the maximum pressure moves around the cylinder as a consequence of roughness elements, which disturb the structure of laminar flow glued to the cylinder surface and generate small rotating vortices in the concaves.…”

“…Reference [1] carried out an experimental study to examine the reduction of wind pressures on glass and claddings of buildings with rectangular cross section with various roughness types. Reference [2] used cylinders with various equidirectional surface roughness and sizes of grooves to investigate the Strouhal number in the wake flow of a cylinder over a wide range of Reynolds numbers.…”