scholarly journals Spontaneous onset of convection in a uniform phoretic channel

Soft Matter ◽  
2020 ◽  
Vol 16 (5) ◽  
pp. 1259-1269 ◽  
Author(s):  
Sébastien Michelin ◽  
Simon Game ◽  
Eric Lauga ◽  
Eric Keaveny ◽  
Demetrios Papageorgiou
Keyword(s):  
Onset Of Convection ◽  
Marangoni Instability ◽  
Convective Flows ◽  
Active Channels ◽  
Spontaneous Onset

Phoretic phenomena can create spontaneous convective flows in uniform chemically-active channels following a mechanism similar to Bénard Marangoni instability.

The Effect of Differences in the Diffusion Coefficients of Components on the Onset of Convection in Isothermal Multicomponent Systems

2016 ◽  
Vol 367 ◽  
pp. 96-102
Author(s):  
Vladimir Kossov ◽  
Yuriy Zhavrin ◽  
Olga Fedorenko
Keyword(s):  
Aqueous Solution ◽  
Diffusion Coefficients ◽  
Effective Diffusion ◽  
Gas Mixtures ◽  
Onset Of Convection ◽  
Gaseous Mixtures ◽  
Convective Flows ◽  
Convective Structures ◽  
Pure Salt ◽  
The Difference

Two series of experiments on the formation of convective flows in multicomponent liquid and gaseous mixtures are considered. In the first series, the convective structures arising during the diffusion of a binary aqueous solution of salt and sugar in an aqueous solution of pure salt were studied using the schlieren method. The observed behavior of convective cells corresponds to the instability similar to the "finger structures". In the second series, the experiments were conducted to determine the effective diffusion coefficients as a function of pressure in gas mixtures 0.5504 CH4 + 0.4496 Ar – N2 and 0.5994 H2 + 0.4006 Ar – N2. Our experiments have shown that the onset of convective flows both in liquid and gaseous multicomponent mixtures is due to the difference in the interdiffusion coefficients of the components. The experimental data for the ternary gas mixtures are described in the framework of the linear theory of stability.

Investigation of behavior of the dynamic contact angle in a problem of convective flows

2017 ◽  
Vol 5 (4) ◽  
pp. 27-42
Author(s):  
O.N Goncharova ◽  
◽  
I.V. Marchuk ◽  
A.V. Zakurdaeva ◽  
◽  
...  
Keyword(s):  
Contact Angle ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Convective Flows

NATURAL CONVECTIVE FLOWS AND MEAN HEAT TRANSFER IN A SLOPING POROUS LAYER

1974 ◽  
Author(s):  
J. Y. Jaffrennou ◽  
S. A. Bories ◽  
M. A. Combarnous
Keyword(s):  
Heat Transfer ◽  
Porous Layer ◽  
Convective Flows
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