Hybrid Simulation of Turbulent Natural Convection in an Enclosure with Thermally-Conductive Walls

Hybrid Simulation of Turbulent Natural Convection in an Enclosure with Thermally-Conductive Walls

Bibliographic Details
Parent link:International Journal of Applied Mechanics
Vol. 13, iss. 6.— 2021.— [2150059, 17 p.]
Main Author: Nee A. E. Aleksandr Eduardovich
Corporate Author: Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
Other Authors: Chamkha A. J. Ali
Summary:Title screen
This paper analyzes the interaction of high Rayleigh number flow with conjugate heat transfer. The two-relaxation time lattice Boltzmann is used as a turbulent buoyancy-driven flow solver whereas the implicit finite difference technique is applied as a heat transfer solver. An in-house numerical code is developed and successfully validated on typical CFD problems. The impact of the Biot number, heat diffusivity ratio and the Rayleigh number on turbulent fluid flow and heat transfer patterns is studied. It is revealed that the thermally-conductive walls of finite thickness reduce the heat transfer rate. The temperature of the cooled wall slightly depends on the value of the buoyancy force. The heat diffusivity ratio has a significant effect on thermal and flow behavior. The Biot number significantly affects the mean Nusselt number at the right solid–fluid interface whereas the mean Nusselt number at the left interface is almost insensible to the Biot number variation.
Published: 2021
Subjects:
электронный ресурс
труды учёных ТПУ
hybrid LBM
turbulent natural convection
FDM
conjugate heat transfer
конвекция
сопряженный теплообмен
Online Access:http://earchive.tpu.ru/handle/11683/73241
https://doi.org/10.1142/S1758825121500599
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668206

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