Results 271 to 280 of about 13,073 (314)

Coupling of vortex shedding with a cavity

Fluid Dynamics Research, 1988
A pulsating flow within a tube with one end sealed and the other end open, facing a low-velocity wind tunnel flow, may be generated by using a wedge trip placed upstream of the open end of the tube. However, a reasonable explanation about the generating mechanism of the pulsating flow within the resonator coupled with a tripping device has not been ...
Masaaki Kawahashi, Eric Brocher, Paul Collini   +2 more
openaire   +1 more source

An Application of Vortex Shedding Flowmeters

Journal AWWA, 1977
After a study of available flowmetering devices, the Santa Clara Valley Wtr. Dist. installed insertion‐style vortex shedding meters in conjunction with its Penitencia water‐treatment plant and East Pipeline distribution main. The performance of these meters in a practical application in a treated water distribution system is discussed and evaluated in ...
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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
openaire   +1 more source

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
openaire   +1 more source

Vortex shedding from spheres

Journal of Fluid Mechanics, 1974
Vortex shedding from spheres has been studied in the Reynolds number range 400 < Re < 5 × 106. At low Reynolds numbers, i.e. up to Re = 3 × 103, the values of the Strouhal number as a function of Reynolds number measured by Möller (1938) have been confirmed using water flow.
openaire   +1 more source

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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Vortex shedding from a row of square bars

Fluid Dynamics Research, 2003
Summary: Interactions of wakes in a flow past a row of square bars, which is placed across a uniform flow, are investigated by numerical simulations and experiments on the tassumption that the flow is two-dimensional and incompressible. At small Reynolds numbers the flow is steady and symmetric with respect not only to streamwise lines through the ...
Mizushima, Jiro, Akinaga, Takeshi
openaire   +2 more sources

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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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
openaire   +1 more source

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 ...
openaire   +2 more sources