Results 301 to 310 of about 46,839 (349)

Vortex shedding in rotating flows

Geophysical & Astrophysical Fluid Dynamics, 1983
Abstract A rotating tow facility whose principle element is a long acrylic channel of rectangular cross-section has been developed. A smooth flexible belt, which can be translated along the channel axis, serves as a false horizontal floor. The system is mounted on a turntable which rotates at a constant angular speed about a vertical axis.
Don L. Boyer, Michael L. Kmetz
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Vortex shedding from finned tubes

Journal of Sound and Vibration, 1975
The frequency of regular vortex shedding from a finned tube of the kind used in heat exchangers has been measured for an isolated tube in a wind tunnel. A Strouhal number expressed in terms of an effective diameter, defined as the frontal area per unit length of tube, is found to be nearly constant and to depend only on the ratio of fin spacing to tube
W.A. Mair, P.D.F. Jones, R.K.W. Palmer
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An electrostatic vortex shedding meter

Flow Measurement and Instrumentation, 1990
Abstract The conventional vortex shedding flowmeter performs satisfactorily in the metering of many types of fluid, but the reliability of its sensor can be questionable when exposed to hostile environments. In this paper the standard piezoelectric sensor in a commercially available flowmeter was replaced by electrodes positioned within the flow tube.
J.L. Sproston, A. El-Wahed, M.W. Johnson
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Vortex shedding in subcritical conditions

Physics of Fluids, 2003
An expressly developed apparatus has been applied to the study of the phenomenon of vortex shedding at Reynolds numbers inferior to the critical value. During previous research it was discovered that vortex shedding could be triggered under subcritical conditions by imparting low-amplitude transversal vibrations at specific frequencies to a cylinder ...
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Vortex Shedding from `Taylor Columns'

Journal of the Physical Society of Japan, 1978
Visual observations are presented of the vortex wakes behind `Taylor columns' generated by a short upright cylinder moving horizontally through water in rapid rotation about a vertical axis. They demonstrate the periodic separation and rolling-up of the free shear layers around the Taylor column.
Masaki Takematsu, Tsugio Kita
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Natural and Forced Vortex Shedding

1981
Natural and forced vortex shedding has been investigated experimentally over circular cylinders in the VPI water tunnel. Flow visualizations and Laser-Doppler Anemometry have been employed. Results indicate that in the lock-on region there are three distinct modes of vortex shedding.
G. S. Jones, C. Barbi, D. P. Telionis
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Vortex Shedding: A Review on Flat Plate

Fluid Dynamics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Teimourian, Amir, Yazdi, Sina G., Hacisevki, Hasan   +2 more
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Vortex shedding from two cylinders in tandem

Journal of Wind Engineering and Industrial Aerodynamics, 1988
Abstract Measurements are presented of the frequencies of vortex shedding from two cylinders in tandem. In the first set of experiments both cylinders were circular. The diameter of the downstream cylinder was 22.5 mm, and three different cylinders, having diameters 23.6 mm, 24.6 mm and 25.7 mm respectively, were used in turn as the upstream cylinder.
T. ALBRECHT, F.H. BARNES, A.J. BAXENDALE, I. GRANT   +3 more
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A “robust” vortex-shedding anemometer

Experiments in Fluids, 1993
A simple device has been constructed for the purpose of monitoring low air speeds. Two such devices have been calibrated to cover the speed range 0.4 to 1.3 m/s, and have shown linear characteristics of frequency versus speed. Flow visualization has shown the absence of end cells and the presence of parallel shedding in the case of low-aspect-ratio ...
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The active control of vortex shedding

Journal of Fluids and Structures, 1989
This paper describes an active method of controlling vortex shedding from a circular cylinder at Reynolds number 400. The control was effected by an acoustic feedback of signals taken from hot-wires in the wake of the cylinder. The velocity fluctuation at the nominal vortex shedding frequency is reduced throughout the wake, in places by more than 30 ...
J.E. Ffowcs Williams, B.C. Zhao
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