Interference Effects of Wind Flow around Three Parallel-Aligned Wall-Mounted Cubes Placed in Turbulent Boundary Layer

Abstract:

The study undertook various calculations of the turbulent wind flow around a body in close proximity to neighboring obstacles, with the aim of gaining an understanding of the wind velocity and the surface-pressure variations with respect to the azimuth angle of wind direction and the gap distance between the obstacles. This paper presents the effects of wind flow interference among three parallel-aligned wall-mounted cubes for azimuth angles of Φ = 0°, 15°, 30°, and 45° and gap distances of G = 0.5h, 1.0h, 1.5h, and ∞ (i.e., a single cube), where G is the gap distance and h is the cube height. A transient detached eddy simulation (DES) was carried out to calculate the highly complicated wind flow domain around the three cubes to observe the surface-pressure, velocity, vortex and spectra characteristics. The results indicate that an increasing wind azimuth angle can even change the mean surface pressure coefficient on the side face of the center cube from negative to positive value. In addition, because of the interference effects, the velocity and pressure distributions around the center cube also show a substantial change depending on the gap distance.

• Periodical: Advanced Materials Research (Volumes 805-806)
• Pages: 416-419
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.805-806.416
• Online since: September 2013
• Authors: Dan Gu*, Hee Chang Lim
• Keywords: Azimuth Angle, DES, Gap Distance, Interference, Parallel-Aligned Cubes, Wind Energy

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