Showing papers on "Vortex-induced vibration published in 1983"
TL;DR: In this paper, a universal relationship between the frequency of oscillation induced in a restrained fluid body by an external free flow, the velocity of the latter, and a typical width of the body is established.
Abstract: A universal relationship between the frequency of oscillation induced in a restrained fluid body by an external free flow, the velocity of the latter, and a typical width of the body, is established. Evidence is offered of the accuracy of this “Strouhal law” in such phenomena as wing autorotation, intermittent formation of vortices behind weirs and orifices, jet flapping and puffing, wake vortex shedding, oscillation of shock waves, cavitation bubbles and vortex breakdowns. A corollary of the Strouhal law shows that travelling waves of a well‐defined length may associate with the fluid‐body oscillation. Corroborations are offered concerning the spacing of wind waves, internal waves and dunes and Taylor‐cell waves. The usefulness of the law as a heuristic tool is stressed.
65 citations
TL;DR: In this article, the effect of the solid surface coating with the magnetic fluid layer on the free-stream flow structure and on the hydrodynamic drag force is investigated, and the effectiveness on the influence of magnetic fluid, held by the magnetic field, on the non-magnetic fluid flow is illustrated on the examples of a circular cylinder covered by a magnetic layer and the flow in a sinusoidal channel, the walls of which are covered by magnetic fluid.
12 citations
TL;DR: In this paper, a structural impedance approach is extended for the dynamic analysis of pipe structures conveying fluid flow and the critical speed associated with the dynamic stability is calculated and compared with available analytical and experimental results.
10 citations