Structure and stability of hollow vortex equilibria
Structure and stability of hollow vortex equilibria
复制标题
空心涡平衡结构及其稳定性
DOI:
10.1017/jfm.2011.467
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发表时间:
2011
影响因子:
3.7
通讯作者:
Llewellyn Smith S
中科院分区:
文献类型:
--
作者:
Llewellyn Smith S
This paper considers the structure and linear stability of two-dimensional hollow vortex equilibria. Equilibrium solutions for a single hollow vortex in linear and nonlinear straining flows are derived in analytical form using free streamline theory. The linear stability properties of this solution class are then determined numerically and a new type of resonance-induced displacement instability is identified. It is found to be a consequence of the fact that one of the shape distortion modes of a circular hollow vortex has the same frequency as one of the modes corresponding to displacement of the vortex centroid. The instability is observed in the case of an isolated hollow vortex situated in straining flow of order three. We also revisit the hollow vortex row solution due to Baker, Saffman & Sheffield (J. Fluid Mech., vol. 74, 1976, p. 1469), and since it is currently lacking in the literature, we present a full linear stability analysis of this solution using Floquet analysis.
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影响因子:
3.7
作者:
J. Kamm
通讯作者:
J. Kamm
影响因子:
3.7
作者:
G. Baker;P. Saffman;J. S. Sheffield
通讯作者:
J. S. Sheffield
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
P. Saffman;R. Szeto
通讯作者:
R. Szeto
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
D. W. Moore;P. Saffman;S. Tanveer
通讯作者:
S. Tanveer
影响因子:
3.7
作者:
MEIRON, DI;SAFFMAN, PG;SCHATZMAN, JC
通讯作者:
SCHATZMAN, JC