Convection in a colloidal suspension in a closed horizontal cell

The experimentally detected [1] oscillatory regimes of convection in a colloidal suspension of nanoparticles with a large anomalous thermal diffusivity in a closed horizontal cell heated from below have been simulated numerically. The concentration inhomogeneity near the vertical cavity boundaries a...

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2015-02, Vol.120 (2), p.319-326
Main Authors: Smorodin, B. L., Cherepanov, I. N.
Format: Article
Language:English
Subjects:
ASPECT RATIO
Classical and Quantum Gravitation
COMPUTERIZED SIMULATION
CONCENTRATION RATIO
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Elementary Particles
MIXING
NANOPARTICLES
Nonlinear
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theory
RAYLEIGH NUMBER
Relativity Theory
Soft Matter Physics
Solid State Physics
Statistical
SUSPENSIONS
THERMAL DIFFUSION
THERMAL DIFFUSIVITY
TRAVELLING WAVES
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Summary:The experimentally detected [1] oscillatory regimes of convection in a colloidal suspension of nanoparticles with a large anomalous thermal diffusivity in a closed horizontal cell heated from below have been simulated numerically. The concentration inhomogeneity near the vertical cavity boundaries arising from the interaction of thermal-diffusion separation and convective mixing has been proven to serve as a source of oscillatory regimes (traveling waves). The dependence of the Rayleigh number at the boundary of existence of the traveling-wave regime on the aspect ratio of the closed cavity has been established. The spatial characteristics of the emerging traveling waves have been determined.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776115010161