Results 171 to 180 of about 921 (215)

Kinematics and muscle activity of pectoral fins in rainbow trout (Oncorhynchus mykiss) station holding in turbulent flow.

J Exp Biol
Gibbs BJ, Akanyeti O, Liao JC.
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Von Kármán vortex streets on the sphere

Physics of Fluids, 2009
We consider streamline patterns associated with single and double von Kármán point vortex streets on the surface of a nonrotating sphere, with and without pole vortices. The full family of streamline patterns are identified and the topological bifurcations from one pattern to another are depicted as a function of latitude and pole strength. The process
Eva Kanso, Paul K Newton, Kanso Eva
exaly   +3 more sources

Experimental Investigation of Vortex Streets

Journal of the Physical Society of Japan, 1965
Vortex streets behind circular cylinders and fiat plates were investigated experimentally in a water tank. Photography and hot-wire techniques were used. The important points resulting from the investigation are as follows. (1) Walls increase the stability of the wake. (2) Two parallel walls have a compressing effect on the vortex street.
Sadatoshi Taneda, Taneda Sadatoshi
exaly   +2 more sources

The dynamics of vortex streets in channels

Physics of Fluids, 2015
We develop a model to numerically study the dynamics of vortex streets in channel flows. Previous work has studied the vortex wakes of specific vortex generators. Here, we study a wide range of vortex wakes including regular and reverse von Kármán streets with various strengths, geometries, and Reynolds numbers (Re) by applying a smoothed von Kármán ...
Xiaolin Wang, Silas Alben, Alben Silas   +2 more
exaly   +3 more sources

Vortex streets in the earth's atmosphere

Pure and Applied Geophysics, 1967
Calculations of the Heisenberg parameter and Strouhal number, for mesoscale vortex streets in the atmosphere, support the analogy with the classical Karman vortex wake. Revised estimates of the horizontal coefficient of eddy diffusion are obtained.
J N Hunt
exaly   +2 more sources

Deep learning solver unites SDGSAT-1 observations and Navier–Stokes theory for oceanic vortex streets [PDF]

Remote Sensing of Environment
The world’s first scientific satellite for sustainable development goals (SDGSAT-1) provides valuable data about offshore small-scale ocean phenomena, including the Kármán vortex street phenomenon.
He Gao, Baoxiang Huang, Ge Chen
exaly   +3 more sources

Robustness of vortex streets

Physical Review E, 1994
We study the robustness of the vortex street behind a circular cylinder when there is transfer of momentum between the wake and the surrounding fluid. The model used to represent exchanges of momentum is based on L\'evy walks, as implemented in lattice-gas hydrodynamics.
, Hayot, , Wagner
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Formation of Vortex Streets

Journal of Applied Physics, 1953
It is shown that, for vortex trails in a nonviscous fluid, the mean longitudinal spacing a and mean transverse spacing h are invariant. It follows from this and other known facts, that the periodicity of a vortex trail is unstable, not the ratio h/a. In a viscous fluid, a is invariant but h increases.
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The formation of vortex streets

Journal of Fluid Mechanics, 1962
The formation of vortex streets in the wake of two-dimensional bluff bodies can be explained by considering the non-linear interaction of two infinite vortex sheets, initially a fixed distance, h, apart, in an inviscid incompressible fluid. The interaction of such sheets (represented in the calculation by rows of point-vortices) is examined in detail ...
Abernathy, F. H., Kronauer, R. E.
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Interaction of Vortex Streets

Journal of Applied Physics, 1964
Vortex street eddies shed from multiple cylinders located one behind the other in the plane of flow were observed to interact in a very complex fashion. Contraction, expansion, cancellation, and coalescence of vortices occurred for different values of cylinder separation and Reynolds number.
David G. Thomas, Kurt A. Kraus
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