Viscous-fingering mechanisms under a peeling elastic sheet

Viscous-fingering mechanisms under a peeling elastic sheet
复制标题

剥离弹性片下的粘性指法机制

DOI:
--
复制
发表时间:
2019
影响因子:
3.7
通讯作者:
J. Lister
J. Lister
中科院分区:
工程技术2区
文献类型:
--
作者:
Gunnar G. Peng;J. Lister

文献摘要

参考文献

被引文献

相似文献

通过考虑单向拉伸剥离和弯曲剥离的稳定性,研究了弹性壁Hele-Shaw盒中粘性指进不稳定性的影响机制.我们表明,壁的弹性影响稳定的基本状态,但有一个可以忽略不计的直接影响的行为的线性扰动,从而表现得像在“打印机的不稳定性”与刚性的墙壁。此外,在稳定性分析中,单元的几何形状可以很好地近似为三角形楔。我们确定了四个不同的机制-表面张力作用于水平和垂直的界面曲率,运动压缩的纵向基流,和沉积在细胞壁上的膜-每个有助于稳定的系统。对于较小的毛细血管数量,垂直曲率是主要的稳定机制,但所有四种机制在参数空间的大范围内都有显着的影响。
We study the mechanisms affecting the viscous-fingering instability in an elastic-walled Hele-Shaw cell by considering the stability of steady states of unidirectional peeling-by-pulling and peeling-by-bending. We demonstrate that the elasticity of the wall influences the steady base state but has a negligible direct effect on the behaviour of linear perturbations, which thus behave like in the ‘printer’s instability’ with rigid walls. Moreover, the geometry of the cell can be very well approximated as a triangular wedge in the stability analysis. We identify four distinct mechanisms – surface tension acting on the horizontal and the vertical interfacial curvatures, kinematic compression in the longitudinal base flow, and the films deposited on the cell walls – that each contribute to stabilizing the system. The vertical curvature is the dominant stabilizing mechanism for small capillary numbers, but all four mechanisms have a significant effect in a large region of parameter space.
DOI: 10.1103/physrevlett.108.074502
发表时间: 2012-02-14
影响因子: 8.6
作者:
Pihler-Puzovic, D.;Illien, P.;Juel, A.
通讯作者: Juel, A.
DOI: 10.1017/jfm.2018.404
发表时间: 2018-06
影响因子: 3.7
作者:
D. Pihler-Puzović;Gunnar G. Peng;J. Lister;M. Heil;A. Juel
通讯作者: D. Pihler-Puzović;Gunnar G. Peng;J. Lister;M. Heil;A. Juel
DOI: 10.1017/jfm.2015.590
发表时间: 2015
影响因子: 3.7
作者:
Pihler-Puzovic D
通讯作者: Pihler-Puzovic D