Displacement flows under elastic membranes. Part 1. Experiments and direct numerical simulations
Displacement flows under elastic membranes. Part 1. Experiments and direct numerical simulations
复制标题
位移在弹性膜下流动。
DOI:
10.1017/jfm.2015.590
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发表时间:
2015
影响因子:
3.7
通讯作者:
Pihler-Puzovic D
中科院分区:
文献类型:
--
作者:
Pihler-Puzovic D
The injection of fluid into the narrow liquid-filled gap between a rigid plate and an elastic membrane drives a displacement flow that is controlled by the competition between elastic and viscous forces. We study such flows using the canonical set-up of an elastic-walled Hele-Shaw cell whose upper boundary is formed by an elastic sheet. We investigate both single- and two-phase displacement flows in which the localised injection of fluid at a constant flow rate is accommodated by the inflation of the sheet and the outward propagation of an axisymmetric front beyond which the cell remains approximately undeformed. We perform a direct comparison between quantitative experiments and numerical simulations of two theoretical models. The models couple the Föppl–von Kármán equations, which describe the deformation of the thin elastic membrane, to the equations describing the flow, which we model by (i) the Navier–Stokes equations or (ii) lubrication theory. We identify the dominant physical effects that control the behaviour of the system and critically assess modelling assumptions that were made in previous studies. The insight gained from these studies is then used in Part 2 of this work, where we formulate an improved lubrication model and develop an asymptotic description of the key phenomena.
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影响因子:
3.7
作者:
M. Carvalho;L. Scriven
通讯作者:
M. Carvalho;L. Scriven
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Heap;A. Juel
通讯作者:
A. Juel
影响因子:
8.6
作者:
M. Heil
通讯作者:
M. Heil
影响因子:
3.7
作者:
A. Juel;A. Heap
通讯作者:
A. Heap
DOI:
--
发表时间:
2009
期刊:
Proceedings of the Royal Society A
影响因子:
--
作者:
A. Slim;N. Balmforth;R. Craster;J. C. Miller
通讯作者:
J. C. Miller