Open AccessEvolution of non-stationary boundary layers in a vertical liquid layer in the regime of conjugated natural convective heat exchange
Author(s) -
K. A. Mitin,
A. V. Mitina,
В. С. Бердников
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012192
Subject(s) - prandtl number , convection , mechanics , vortex , boundary layer , stream function , natural convection , rayleigh number , materials science , film temperature , physics , boundary (topology) , thermodynamics , classical mechanics , mathematics , mathematical analysis , nusselt number , reynolds number , vorticity , turbulence
The evolution of non-stationary boundary layers under monotonous heating to a given temperature of the outer surface of one of the walls of a vertical liquid layer is numerically studied. The finite element method is used to solve a system of equations for unsteady thermogravitation convection in the Boussinesq approximation in terms of vortex, stream function, and temperature. The process of formation of non-stationary boundary layers on the heated wall is studied depending on the layer height. In a two-dimensional conjugate problem statement, distributions of non-stationary temperature and velocity fields in a liquid with a Prandtl number of 10 are obtained. Distributions of non-stationary temperature fields in mirror glass walls and temperature gradients on the walls are obtained as well. The calculations are made for the Rayleigh number equal to 10 6 .