Heat transfer from the heated by an electric current vertical rod in the regime of non-stationary natural convection

Autor:	A. V. Mitina, K. A. Mitin, V. S. Berdnikov
Rok vydání:	2021
Předmět:	Convection History Materials science Natural convection Prandtl number Rayleigh number Mechanics Boussinesq approximation (buoyancy) Computer Science Applications Education Physics::Fluid Dynamics symbols.namesake Heat transfer symbols Electric current Voltage
Zdroj:	Journal of Physics: Conference Series. 1867:012041
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1867/1/012041
Popis:	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 104 to 5•105.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d92cbaf344fce65db06ae602a212c90 https://doi.org/10.1088/1742-6596/1867/1/012041 Zobrazit plný text záznamu