ISSN:
1432-1114
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract This paper describes the experimental study of a flow past a cube with rounded side-corners placed in a ground plane under the condition of δ/D 〈 1, where δ is the thickness of the upstream boundary layer. The experiment was carried out in an N.P.L. type wind-tunnel having a working section of 500 mm×500 mm × 2,000 mm at a Reynolds number 4.74×104. The suface-pressure distribution on the cube was measured, and the drag coefficient was determined from the surface-pressure distribution. Furthermore, two kinds of vortices generated around the cube were observed. The distribution of velocities and turbulent intensities in the turbulent wake behind the cube with rounded side corners were measured, and compared with those of a two-dimensional cylinder. As a result, it was found that the drag coefficient decreases rapidly in the range of 0 ≦ 2R/D ≦ 0.3, and the Strouhal number for the arch-vortex shedding increases as the radius of the corner increases.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00198432
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