Modeling of convective structures in a thin layer of silicone oil in air flow under heating

Numerical simulation was performed to study convective structures in a thin silicone oil layer heated from below, whose free surface is exposed to air flow generating drift flow. The basic equations are transformation to a form suitable for spectral methods. The steady flow velocity profile obtained...

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Bibliographic Details
Published in:Journal of applied mechanics and technical physics 2017-03, Vol.58 (2), p.244-253
Main Authors: Reutov, V. P., Rybushkina, G. V.
Format: Article
Language:English
Subjects:
Aerodynamics
Air flow
Applications of Mathematics
Boundary layer transition
Classical and Continuum Physics
Classical Mechanics
Computational fluid dynamics
Computer simulation
Drift
Elongation
Exposure
Flow velocity
Fluid flow
Fluid- and Aerodynamics
Heating
Mathematical Modeling and Industrial Mathematics
Mathematical models
Mechanical Engineering
Physics
Physics and Astronomy
Reynolds number
Rolls
Spectra
Spectral methods
Steady flow
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Summary:Numerical simulation was performed to study convective structures in a thin silicone oil layer heated from below, whose free surface is exposed to air flow generating drift flow. The basic equations are transformation to a form suitable for spectral methods. The steady flow velocity profile obtained in a laboratory experiment is calculated. It is shown that increasing the Reynolds number leads to the transition from polygonal convective cells to longitudinal rolls (elongated along the flow). The dependence of the transition Reynolds number on the temperature on the lower boundary of the layer is obtained. The calculation results are compared with experimental data.
ISSN:0021-8944
1573-8620
DOI:10.1134/S0021894417020079