On a circular cylinder in a steady wind at transition Reynolds numbers
1960; Cambridge University Press; Volume: 9; Issue: 4 Linguagem: Inglês
10.1017/s0022112060001341
ISSN1469-7645
Autores Tópico(s)Aeolian processes and effects
ResumoSome results of an experimental investigation of forces associated with the subsonic flow of air around a circular cylinder in a wind tunnel are presented. The oscillating forces due to the downstream vortex street are studied for Reynolds numbers in the ‘critical’ range 4 × 10 4 to 6 × 10 5 . Of particular interest is the observation, at the onset of transition to turbulence, of a spanwise wave or cell pattern near the cylinder surface, which is stabilized in a striking manner by the use of the fine threads as a visualization technique.
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