Open AccessHeat transfer from the heated by an electric current vertical rod in the regime of non-stationary natural convection
Author(s) -
K. A. Mitin,
A. V. Mitina,
В. С. Бердников
Publication year - 2021
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 - 10.1088/1742-6596/1867/1/012041
Subject(s) - natural convection , mechanics , prandtl number , rayleigh number , convection , isothermal process , heat transfer , combined forced and natural convection , electric field , convective heat transfer , materials science , vortex , thermodynamics , physics , quantum mechanics
The heat transfer from a vertical silicon rod heated by passing an electric current, placed in a cylindrical container filled with gas, with isothermal cold side walls, in the regime of non-stationary conjugate natural convection heat exchange, is studied numerically by the finite element method in a three-dimensional formulation of the problem. On the surface of the rod, a control point is selected, at which a constant temperature is maintained by changing the voltage of the electric current. The equations of thermogravitational convection are solved in the Boussinesq approximation in the terms of temperature, vortex, and vector field potential. The spatial form of convective flows is investigated. Temperature fields in a gas and in a solid are investigated. The calculations were performed with the Prandtl number equal to 0.67 and the Rayleigh number range from 10 4 to 5•10 5 .