Results 21 to 30 of about 44,492 (300)
Characterization of Flow Separation around Inline Cylinders within Oscillatory Flow
Shock and Vibration, 2018 This paper has examined the effects of Reynolds number (Re), Keulegan–Carpenter number (KC), and gap ratio on flow separation around a cylinder array by PIV method in experiment.
Yiding Zhao, Yao Shi
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Vortex shedding in a two-dimensional diffuser: theory and simulation of separation control by periodic mass injection [PDF]
, 2004 We develop a reduced-order model for large-scale unsteadiness (vortex shedding) in a two-dimensional diffuser and use the model to show how periodic mass injection near the separation point reduces stagnation pressure loss.
Colonius, Tim +2 more
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Applied Sciences, 2019 Unsteady excitation has proved its effectiveness in separation flow control and has been extensively studied. It is observed that disordered shedding vortices in compressors can be controlled by unsteady excitation, especially when the excitation ...
Mingming Zhang, Anping Hou
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Oscillations of cometary tails: a vortex shedding phenomenon? [PDF]
Astronomy & Astrophysics, 2018 Context. During their journey to perihelion, comets may appear in the field of view of space-borne optical instruments, showing in some cases a nicely developed plasma tail extending from their coma and exhibiting an oscillatory behaviour. Aims. The oscillations of cometary tails may be explained in terms of vortex shedding because of the interaction ...
Nistico G. +4 more
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Kármán vortex street in a two-component Bose–Einstein condensate
New Journal of Physics, 2019 Vortex shedding from a moving obstacle potential in a two-component Bose–Einstein condensate is investigated numerically. For a miscible two-component condensate composed of ^23 Na and ^87 Rb atoms, in the wake of obstacle, the Kármán vortex street is ...
Xiao-Lin Li +6 more
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Trailing Edge Noise Reduction by Passive and Active Flow Controls [PDF]
, 2014 This paper presents the results on the use of porous metal foams (passive control) and dielectric barrier surface plasma actuations (active control) for the reduction of vortex shedding tonal noises from the nonflat plate type trailing edge serration in ...
Chong T. P. +5 more
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Aeolian tone radiated from a circular cylinder with solid spiral fin in cross flow
Journal of Fluid Science and Technology, 2014 This study focuses on the characteristics of the Aeolian tone and Karman vortex shedding from a circular cylinder with a solid spiral fin. The fin pitch ratios range from 0.11 to 0.80.
Hiromitsu HAMAKAWA +6 more
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Flow visualization observation of the interference vortex flow from a pair of square cylinders
Journal of Fluid Science and Technology, 2023 In order to investigate the aspect of the mutual interference flow from two square cylinders, the visual water-flow observation experiment was performed. In the experiment, the pitch ratio L/d and the arrangement angle α were made into the parameter, and
Yoshifumi YOKOI
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Periodic shedding of vortex dipoles from a moving penetrable obstacle in a Bose-Einstein condensate
, 2015 We investigate vortex shedding from a moving penetrable obstacle in a highly oblate Bose-Einstein condensate. The penetrable obstacle is formed by a repulsive Gaussian laser beam that has the potential barrier height lower than the chemical potential of ...
Kwon, Woo Jin +2 more
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Insights into Vortex Shedding with Data Analysis
Journal of Fluid Science and Technology, 2009 Unsteady, three-dimensional characteristics of vortex shedding were studied with self-made MEMS sensors situated spanwisely on a circular cylinder subjected to uniform incoming flow. Firstly, verification on the reliability of the MEMS sensor signals was
Jiun-Jih MIAU, J. K. TU, T. W. LIAO
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