Unsteady natural convection in a cubical cavity with a triangular heat source; International Journal of Numerical Methods for Heat and Fluid Flow; Vol. 27, iss. 8

Unsteady natural convection in a cubical cavity with a triangular heat source; International Journal of Numerical Methods for Heat and Fluid Flow; Vol. 27, iss. 8

Bibliografiske detaljer
Parent link:	International Journal of Numerical Methods for Heat and Fluid Flow Vol. 27, iss. 8.— 2017.— [P. 1795-1813]
Hovedforfatter:	Gibanov N. S.
Institution som forfatter:	Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
Andre forfattere:	Sheremet M. A. Mikhail Aleksandrovich
Summary:	Title screen Purpose The purpose of this paper is to study natural convective fluid flow and heat transfer inside a cubical cavity having a local heat source of constant temperature. Design/methodology/approach The cubical cavity is cooled from two vertical opposite walls and heated from the local heater mounted on the bottom wall, while the rest walls are adiabatic. The governing equations formulated in dimensionless vector potential functions and vorticity vector have been solved using implicit finite difference method of the second-order accuracy. The effects of the Rayleigh number (Ra = 1e+04 – 1e+06), heat source position (l/L = 0.05 – 0.35) and dimensionless time (0 < tau < 100) on velocity and temperature fields, streamlines, isotherms and average Nusselt number at the heat source surface have been analyzed. Findings It is found that the extreme left position of the heater (l/L = 0.05) illustrates more essential cooling of the cavity where the thermal plume over the heat source is suppressed by low temperature waves from the cold vertical walls. Режим доступа: по договору с организацией-держателем ресурса
Sprog:	engelsk
Udgivet:	2017
Fag:	электронный ресурс труды учёных ТПУ numerical results natural convection cubical cavity triangular heat source vector potential functions численные результаты конвекция полости источники тепла векторные функции
Online adgang:	https://doi.org/10.1108/HFF-06-2016-0234
Format:	Electronisk Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658918

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