In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 129, No. 4_Supplement ( 2011-04-01), p. 2386-2386
Kurzfassung:
Flow around a bluff body near a solid wall, such as a circular or rectangular cylinder placed in a uniform flow near a solid boundary, is of fundamental importance. The reduction in the aerodynamic sound is a very important issue, for example, flow induced noise in tall buildings, bridges, high-speed trains, windmills, and computer cooling fans. This type of problem has been addressed extensively both experimentally and theoretically in the past. The flow past a long rectangular cylinder is usually associated with vortex shedding, which can be affected strongly by the presence of a nearby wall. Flow past a solid body induces vortices and the vortex acceleration will cause sound. In the present study, the aerodynamic sound generated by flow past a rectangular cylinder of various configurations was investigated experimentally in a low-speed quiet wind tunnel. A numerical study using large scale eddy Simulation technique has also been conducted to compute the sound generation due to vortex shedding. Experimental results are compared with the numerical predictions. [Work sponsored by the China Scholarship Council.]
Materialart:
Online-Ressource
ISSN:
0001-4966
,
1520-8524
Sprache:
Englisch
Verlag:
Acoustical Society of America (ASA)
Publikationsdatum:
2011
ZDB Id:
1461063-2
Permalink
