Measurements of liquid film flow as a function of fluid properties and channel width: Evidence for surface-tension-induced long-range transverse coherence

被引：30

作者：

Georgantaki, A. ^{[1
]}

Vatteville, J. ^{[1
]}

Vlachogiannis, M. ^{[1
,2
]}

Bontozoglou, V. ^{[1
]}

机构：

[1] Univ Thessaly, Dept Mech Engn, GR-38334 Volos, Greece

[2] Technol Educ Inst Larissa, GR-41110 Larisa, Greece

来源：

PHYSICAL REVIEW E | 2011年 / 84卷 / 02期

关键词：

SOLITARY WAVES; DYNAMICS; INSTABILITIES; EVOLUTION; PATTERNS;

D O I：

10.1103/PhysRevE.84.026325

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We study experimentally the influence of the transverse dimension on film flow in relatively wide channels with sidewalls. Large deviations from two-dimensional predictions are observed in the primary instability and in the post-threshold traveling waves, and the deviations are presently shown to depend strongly on fluid physical properties. Measurements for a wide range of fluid properties are found to correlate with the Kapitza number, which represents the ratio of capillary to viscous stresses. These observations point to an unexpected long-range effect of surface tension that provides transverse coherence to the flow.

引用

页数：4

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