Hollow vortices in shear

Hollow vortices in shear
复制标题

剪切中的空心涡流

DOI:
--
复制
发表时间:
2016
影响因子:
3.7
通讯作者:
Stefan G. Llewellyn Smith
Stefan G. Llewellyn Smith
中科院分区:
工程技术2区
文献类型:
--
作者:
L. Zannetti;M. Ferlauto;Stefan G. Llewellyn Smith

文献摘要

参考文献

被引文献

相似文献

本文详细介绍了一种确定剪切流中空心涡形状的解析方法。在一个无量纲的配方,它表明,该问题有一个自由度表示的自由选择的无量纲的速度$\unicode[STIX]{x1 D 705}$在边界处的旋涡。这些解形成了对应于涡环量和剪切流涡量的两个形状族,它们具有相反或相同的符号。当符号相反时,形状族类似于Llewellyn Smith & Crowdy(J. Fluid Mech.,第691卷,2012年,pp. 178-200)在有应变的势流中的空心涡。对于这种流动,有一个最小值$\unicode[STIX]{x1 D 705}$,在此值以下,由于旋涡的边界自相交,因此没有解,而当符号相同时,存在$0<\unicode[STIX]{x1 D 705}$的解。
An analytical method for determining the shape of hollow vortices in shear flows is presented in detail. In a non-dimensional formulation, it is shown that the problem has one degree of freedom represented by the free choice of the non-dimensionalized speed $\unicode[STIX]{x1D705}$ at the boundary of the vortex. The solutions form two families of shapes corresponding to vortex circulation and shear-flow vorticity having the opposite or same sign. When the signs are opposite, the shape family resembles that described by Llewellyn Smith & Crowdy (J. Fluid Mech., vol. 691, 2012, pp. 178–200) for hollow vortices in a potential flow with strain. As for that flow, there is a minimum value of $\unicode[STIX]{x1D705}$ below which there is no solution as the boundary of the vortex self-intersects, while, when the signs are the same, solutions exist for $0<\unicode[STIX]{x1D705}$ .
DOI: 10.1016/j.euromechflu.2012.09.007
发表时间: 2013
期刊: European Journal of Mechanics - B/Fluids
影响因子: --
作者:
Crowdy D
通讯作者: Crowdy D
空心涡平衡结构及其稳定性
DOI: 10.1017/jfm.2011.467
发表时间: 2011
影响因子: 3.7
作者:
Llewellyn Smith S
通讯作者: Llewellyn Smith S