On flow in weakly precessing cylinders: the general asymptotic solution

On flow in weakly precessing cylinders: the general asymptotic solution
复制标题

弱进动圆柱体中的流动:一般渐近解

DOI:
10.1017/jfm.2012.355
复制
发表时间:
2012-08
影响因子:
3.7
通讯作者:
Zhang, Keke
Zhang, Keke
中科院分区:
工程技术2区
文献类型:
--
作者:
Liao, Xinhao;Zhang, Keke

文献摘要

参考文献

被引文献

相似文献

摘要通过渐近和数值分析,我们研究了均匀流体在充满流体的圆柱体中的渐近驱动流动,该圆柱体绕其对称轴快速旋转,并围绕空间中固定的不同轴缓慢前进。在证明了无粘近似在远离共振的情况下总是发散的基础上,我们得到了旋转坐标系中渐近小的Ekman数的一般渐近解,它描述了满足无滑移边界条件的弱进动流动,并且在共振处或附近或远离共振处有效。用Galerkin方法对同一问题进行了切比雪夫多项式展开的数值分析,结果表明,在共振点附近或远离共振点,一般渐近解与相应的数值解具有令人满意的一致性。
Abstract We investigate, through both asymptotic and numerical analysis, precessionally driven flow of a homogeneous fluid confined in a fluid-filled circular cylinder that rotates rapidly about its symmetry axis and precesses slowly about a different axis that is fixed in space. After demonstrating that the inviscid approximation is always divergent even far away from resonance, we derive a general asymptotic solution for an asymptotically small Ekman number in the rotating frame of reference describing the weakly precessing flow that satisfies the no-slip boundary condition and that is valid at or near or away from resonance. Numerical analysis of the same problem using the Galerkin method in terms of a Chebyshev polynomial expansion is also carried out, showing satisfactory agreement between the general asymptotic solution and the corresponding numerical solution at or near or away from resonance.
DOI: 10.1063/1.857726
发表时间: 1990-05
期刊: Physics of Fluids
影响因子: 4.6
作者:
F. Marques
通讯作者: F. Marques
DOI: 10.1017/s0022112096007380
发表时间: 1996-07
影响因子: 3.7
作者:
J. J. Kobine-J.
通讯作者: J. J. Kobine-J.
DOI: 10.1017/s0022112000002536
发表时间: 2000-11
影响因子: 3.7
作者:
A. Tilgner;F. Busse
通讯作者: A. Tilgner;F. Busse
DOI: 10.1017/s0022112072212769
发表时间: 1972-04
影响因子: 3.7
作者:
H. Greenspan
通讯作者: H. Greenspan
DOI: 10.1080/03091920903311788
发表时间: 2009-11
影响因子: 1.3
作者:
Cheng-Chin Wu;P. Roberts
通讯作者: Cheng-Chin Wu;P. Roberts