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Visualisation of the vortex street behind a circular cylinder in air; the flow is made visible through release of glycerol vapour in the air near the cylinder. In fluid dynamics, a Kármán vortex street (or a von Kármán vortex street) is a repeating pattern of swirling vortices, caused by a process known as vortex shedding, which is responsible for the unsteady separation of flow of a fluid ...
Under the correct flow conditions, the flow around a bluff body produces a regular pattern of alternating vortices known as a von Karman vortex street (Figure 20).These vortices produce a sinusoidal force acting on the body perpendicular to the flow.
May 29, 2024 · Explore the dynamics of the Von Kármán Vortex Street, its impact on engineering, environmental science, and energy innovations.
Dec 7, 2016 · The von Kármán vortex street is a classical flow pattern of swirling vortices, arising in clouds, streams, and rivers. Yong-il Shin from Seoul National University, Korea, and colleagues have now created its quantum analog in an ultracold gaseous superfluid [], marking a major step in unraveling the deep connections between these extraordinary fluids and their everyday counterparts.
May 28, 2024 · Karman Vortex Street is a pattern of swirling vortices in fluid dynamics resulting from unsteady flow separation around blunt bodies, named after Theodore von Kármán.
May 4, 1981 · - 1 - I. Historical Overview and General Introduction The Karman vortex street is a complex fluid mechanical phenomenon which occurs in a remarkable variety of circumstances. The "singing" of power lines or kite
Jan 4, 2021 · On a clear day, the towering peaks on Fogo, Santa Antão, and São Nicolau stand out amid the flatter islands of Cabo Verde (Cape Verde). These three volcanic islands, the tallest in the archipelago, stand high enough to generate rain shadow effects that support unique dry forests on some of the islands.. The height also helps these islands disturb passing air masses and clouds in a way that ...
Jul 10, 2024 · If ${\mathcal{H}}>0$ the critical point is an extremum, if ${\mathcal{H}}<0$ it is a saddle. Such critical points are robust, i.e. they persist as they are advected with the flow; see Brøns & Bisgaard (Reference Brøns and Bisgaard 2010) for a derivation of their equations of motion.If ${\mathcal{H}}=0$ at a critical point, the critical point is degenerate and a bifurcation occurs in the ...
Apr 11, 2022 · (Also called Kármán vortex street, vortex trail, vortex train.) Two parallel rows of alternately placed vortices along the wake of an obstacle in a fluid of moderate Reynolds number. Fluid drag can be calculated from the motion of these vortices, which are stable only for a certain ratio of the width of the street to the distance between vortices along the street.
Other articles where Kármán’s Vortex Street is discussed: Theodore von Kármán: Early life: …fluid stream, now famous as Kármán’s Vortex Street. The use of his analysis to explain the collapse, during high winds, of the Tacoma Narrows Bridge in the state of Washington, in the United States, in 1940, is one of the most striking examples of its value.
