Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/37601
Title: Invariance of CDST in the turbulent wake of bluff bodies
Authors: Hu, JC
Zhou, Y
Huang, JF
Keywords: Wake turbulence
Issue Date: 2005
Source: Proceedings of the ASME 2005 Fluids Engineering Division Summer Meeting, Houston, Texas, USA, June 19–23, 2005, v. 1, paper no. FEDSM2005-77046, p. 447-453 (CD-ROM) How to cite?
Abstract: The inter-relationship of drag coefficient Cd and Strouhal number St in a turbulent wake was experimentally investigated for ten cylinders of the same characteristic height d but of different cross-sections at Re = 2600 and 6000, based on the freestream velocity U∞ and d. It is found that, although Cd and St depend strongly on the geometric cross-section of the cylinder, the product of Cd St is invariant, about 0.25, under present experimental conditions. This invariance of Cd St is further confirmed with respect to Re and angle of attack of a square cylinder based on a collection of data in the literature. It is further found that Cd St is actually the ratio of the dimensionless work done upon the fluid by the cylinder to the dimensionless wavelength.
URI: http://hdl.handle.net/10397/37601
ISBN: 0-7918-4198-7
0-7918-3760-2 (E-ISBN)
DOI: 10.1115/FEDSM2005-77046
Appears in Collections:Conference Paper

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