Physics of Fluids, volume 6, issue 5, pages 1684-1701
Physical mechanisms of instability in a liquid layer subjected to an electric field and a thermal gradient
F Pontiga
1, 2
,
A. Castellanos
3
1
Departamento de Electrónica y Electromagnetismo, Facultad de Fisica, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
|
2
Departamento de Fisica Aplicada. E. U. A. T. Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
|
3
Departamento de Electrónica y Electromagnetismo, Facultad de Física, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
|
Publication type: Journal Article
Publication date: 1994-05-01
Journal:
Physics of Fluids
scimago Q1
SJR: 1.050
CiteScore: 6.5
Impact factor: 4.1
ISSN: 10706631, 10897666, 00319171
DOI:
10.1063/1.868231
Condensed Matter Physics
Mechanical Engineering
Mechanics of Materials
Computational Mechanics
Fluid Flow and Transfer Processes
Abstract
The linear stability of a plane layer of dielectric liquid subjected to an electric field and a thermal gradient is studied. The liquid is supposed to have a non-negligible residual conductivity and to exhibit an injection of charge from one of the electrodes. Both effects are due to the dissolution of a given salt in the liquid. The ionic mobility and the dielectric constant are temperature dependent. The stability of this configuration is studied with the help of an heuristic model and a precise discussion of the physical mechanisms of instability is made. Complete sets of the stability maps corresponding to different cases are presented.
Found
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