The influence of thermocapillary effect on the onset of convection in a two-layer system with deformable interface and perfectly conductive boundaries

2019 ◽  
Vol 129 ◽  
pp. 610-617 ◽  
Author(s):  
Tatyana Lyubimova ◽  
Yanina Parshakova
Keyword(s):  
Thermocapillary Effect ◽  
Layer System ◽  
Onset Of Convection ◽  
Deformable Interface

Nonlinear development of oscillatory instability in a three-layer system under the joint action of buoyancy and thermocapillary effect

2011 ◽  
Vol 23 (1) ◽  
pp. 012103 ◽  
Author(s):  
Ilya B. Simanovskii ◽  
Antonio Viviani ◽  
Frank Dubois ◽  
Jean-Claude Legros
Keyword(s):  
Joint Action ◽  
Oscillatory Instability ◽  
Thermocapillary Effect ◽  
Layer System ◽  
Nonlinear Development

Influence of thermocapillary effect and interfacial heat release on convective oscillations in a two-layer system

2004 ◽  
Vol 16 (4) ◽  
pp. 1127-1139 ◽  
Author(s):  
Alexander A. Nepomnyashchy ◽  
Ilya B. Simanovskii
Keyword(s):  
Heat Release ◽  
Thermocapillary Effect ◽  
Layer System

Investigation of thermocapillary convection in a three-liquid-layer system

1999 ◽  
Vol 389 ◽  
pp. 209-228 ◽  
Author(s):  
Ph. GÉORIS ◽  
M. HENNENBERG ◽  
G. LEBON ◽  
J. C. LEGROS
Keyword(s):  
Reasonable Agreement ◽  
Thermocapillary Convection ◽  
Microgravity Environment ◽  
Liquid Interfaces ◽  
Layer System ◽  
Onset Of Convection ◽  
System A ◽  
Buoyancy Forces ◽  
Convective Pattern ◽  
Similar Temperature

This paper presents the first experimental results on Marangoni–Bénard instability in a symmetrical three-layer system. A pure thermocapillary phenomenon has been observed by performing the experiment in a microgravity environment where buoyancy forces can be neglected. This configuration enables the hydrodynamic stability of two identical liquid–liquid interfaces subjected to a normal gradient of temperature to be studied. The flow is driven by one interface only and obeys the criterion based on the heat diffusivity ratio proposed by Scriven & Sternling (1959) and Smith (1966). The measured critical temperature difference for the onset of convection is compared to the value obtained from two-dimensional numerical simulations. The results of the simulations are in reasonable agreement with the velocimetry and the thermal experimental data for moderate supercriticality. Numerically and experimentally, the convective pattern exhibits a transition between different convective regimes for similar temperature gradients. Their common detailed features are discussed.

Three-dimensional convection in a two-layer system with anomalous thermocapillary effect

2002 ◽  
Vol 14 (11) ◽  
pp. 3899-3911 ◽  
Author(s):  
Thomas Boeck ◽  
Alexander Nepomnyashchy ◽  
Ilya Simanovskii ◽  
Alexander Golovin ◽  
Leonid Braverman ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Thermocapillary Effect ◽  
Layer System
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