Results 141 to 150 of about 464 (173)
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3-D Vortex Structures Superposed on Karman Vortex Street
The Proceedings of the Fluids Engineering Conference, 2004Yusuke IMAMURA, Masanori MATSUMURA
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Modification of the Karman-vortex street in the freestream
AIAA Journal, 1986An experimental study conducted in the NASA Langley 15-in Low-Turbulence Wind Tunnel demonstrated that a relatively short-chord flow-aligned plate placed in the proximity of a cylindar could produce nearly one-signed oscillatory transverse control vortices.
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Karman Vortex Street in a Vibrationally Nonequilibrium Gas
Fluid Dynamics, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nikolay Vinnichenko +2 more
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Karman vortex street assisted patterning in the growth of silicon nanowires
Chem. Commun., 2007A Karman vortex street was employed to pattern catalysts and grow nanomaterial arrays, which were made of a disk-like superstructure built of silicon nanowires; there also existed nanowires connected with the disks.
Mingwang, Shao +5 more
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Modeling and Control of Karman Vortex Streets
1991One of the most important problems in hydrodynamics is the behaviour of low-dimensional dynamics in closed and open flows. Lorenz 1 and Ruelle & Takens 2 proposed that the dynamics of a hydrodynamic system at the onset of turbulence could be described by strange attractors and low-dimensional differential equations.
E. Roesch +3 more
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Karman vortex street parametrization with image processing application
SPIE Proceedings, 2003The karman vortex street phenomenon is applied in the vortex flowmeter. Application of various methods of investigations is necessary in the course of getting increased knowledge of the phenomenon. Flow visualization being the leading method of aero- and hydrodynamic phenomena investigations enables qualitative evaluation in micro-scale.
Grzegorz Pankanin +2 more
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Destabilization of the Karman vortex street by frequency-modulated excitation
Physics of Fluids A: Fluid Dynamics, 1991A two-dimensional cylinder is subjected to frequency-modulated excitation in the cross-stream direction. Transition from a locked-in response to a completely destabilized response can be attained by lowering the value of modulation frequency while all other parameters are maintained constant.
M. Nakano, D. Rockwell
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Frequency of the Karman Vortex Streets in Tube Banks
The Journal of the Royal Aeronautical Society, 1967In the note “Aerodynamically induced vibration in coolers”, by D. G. Mabey (pp 876-7, December 1965 Journal), the results of Grotz and Arnold concerning the frequency of the Karman vortex streets in tube banks, such as in heat exchangers, are mentioned, as is also the law of the linear relation between f(T—d)/V and (2T-L)/d, as found by Putnam, where f
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Elliptical-inertial instability of rotating Karman vortex streets
Physics of Fluids, 2005Clouds often reveal a small-scale vortex shedding in the wake of mountainous islands. Unlike the classical bidimensional Karman street, these observed vortex streets are affected by the earth’s rotation and vertical stratification of the atmosphere. These effects induce a selective destabilization of anticyclonic vorticity regions.
Stegner, A., Pichon, T., Beunier, M.
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On the Impingement of von Karman Vortex Street on a Delta Wing
22nd Applied Aerodynamics Conference and Exhibit, 2004It is well known that aircraft undergoing high angle of attack excursions (e.g., the Cobra maneuver) may experience asymmetric forebody vortex shedding under certain conditions. The detachment of these vortices from the forebody is similar to that observed from von Karman vortex shedding from cylinders.
Ismael Heron, Roy Myose
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