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Relevant bibliographies by topics / Vortex instability

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Journal articles

Academic literature on the topic 'Vortex instability'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Vortex instability"

1

Koshel, Konstantin V., and Eugene A. Ryzhov. "Parametric resonance in the dynamics of an elliptic vortex in a periodically strained environment." Nonlinear Processes in Geophysics 24, no. 1 (2017): 1–8. http://dx.doi.org/10.5194/npg-24-1-2017.

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Abstract. The model of an elliptic vortex evolving in a periodically strained background flow is studied in order to establish the possible unbounded regimes. Depending on the parameters of the exterior flow, there are three classical regimes of the elliptic vortex motion under constant linear deformation: (i) rotation, (ii) nutation, and (iii) infinite elongation. The phase portrait for the vortex dynamics features critical points which correspond to the stationary vortex not changing its form and orientation. We demonstrate that, given superimposed periodic oscillations to the exterior defor

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2

MacKay, R. S. "Instability of vortex streets." Dynamics and Stability of Systems 2, no. 1 (1987): 55–71. http://dx.doi.org/10.1080/02681118708806027.

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3

Acheson, D. J. "Instability of vortex leapfrogging." European Journal of Physics 21, no. 3 (2000): 269–73. http://dx.doi.org/10.1088/0143-0807/21/3/310.

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4

Marxen, Olaf, Matthias Lang, and Ulrich Rist. "Vortex formation and vortex breakup in a laminar separation bubble." Journal of Fluid Mechanics 728 (July 1, 2013): 58–90. http://dx.doi.org/10.1017/jfm.2013.222.

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AbstractThe convective primary amplification of a forced two-dimensional perturbation initiates the formation of essentially two-dimensional large-scale vortices in a laminar separation bubble. These vortices are then shed from the bubble with the forcing frequency. Immediately downstream of their formation, the vortices get distorted in the spanwise direction and quickly disintegrate into small-scale turbulence. The laminar–turbulent transition in a forced laminar separation bubble is dominated by this vortex formation and breakup process. Using numerical and experimental data, we give an in-

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5

SCHAEFFER, NATHANAËL, and STÉPHANE LE DIZÈS. "Nonlinear dynamics of the elliptic instability." Journal of Fluid Mechanics 646 (March 8, 2010): 471–80. http://dx.doi.org/10.1017/s002211200999351x.

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In this paper, we analyse by numerical simulations the nonlinear dynamics of the elliptic instability in the configurations of a single strained vortex and a system of two counter-rotating vortices. We show that although a weakly nonlinear regime associated with a limit cycle is possible, the nonlinear evolution far from the instability threshold is, in general, much more catastrophic for the vortex. In both configurations, we put forward some evidence of a universal nonlinear transition involving shear layer formation and vortex loop ejection, leading to a strong alteration and attenuation of

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6

LEWEKE, T., and C. H. K. WILLIAMSON. "Cooperative elliptic instability of a vortex pair." Journal of Fluid Mechanics 360 (April 10, 1998): 85–119. http://dx.doi.org/10.1017/s0022112097008331.

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In this paper, we investigate the three-dimensional instability of a counter-rotating vortex pair to short waves, which are of the order of the vortex core size, and less than the inter-vortex spacing. Our experiments involve detailed visualizations and velocimetry to reveal the spatial structure of the instability for a vortex pair, which is generated underwater by two rotating plates. We discover, in this work, a symmetry-breaking phase relationship between the two vortices, which we show to be consistent with a kinematic matching condition for the disturbances evolving on each vortex. In th

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7

Barnes, C. J., M. R. Visbal, and P. G. Huang. "On the effects of vertical offset and core structure in streamwise-oriented vortex–wing interactions." Journal of Fluid Mechanics 799 (June 21, 2016): 128–58. http://dx.doi.org/10.1017/jfm.2016.320.

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This article explores the three-dimensional flow structure of a streamwise-oriented vortex incident on a finite aspect-ratio wing. The vertical positioning of the incident vortex relative to the wing is shown to have a significant impact on the unsteady flow structure. A direct impingement of the streamwise vortex produces a spiralling instability in the vortex just upstream of the leading edge, reminiscent of the helical instability modes of a Batchelor vortex. A small negative vertical offset develops a more pronounced instability while a positive vertical offset removes the instability alto

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8

Mounce, A. M., S. Oh, S. Mukhopadhyay, et al. "Charge-induced vortex lattice instability." Nature Physics 7, no. 2 (2010): 125–28. http://dx.doi.org/10.1038/nphys1835.

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9

Tophøj, Laust, and Hassan Aref. "Instability of vortex pair leapfrogging." Physics of Fluids 25, no. 1 (2013): 014107. http://dx.doi.org/10.1063/1.4774333.

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10

Sukhanovskii, A., A. Evgrafova, and E. Popova. "Instability of cyclonic convective vortex." IOP Conference Series: Materials Science and Engineering 208 (June 2017): 012040. http://dx.doi.org/10.1088/1757-899x/208/1/012040.

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