Effect of buoyancy force on turbulent modes of complex heat transfer in an air-filled square cavity

Аннотация

Turbulent natural convection with the interaction of surface radiation in square enclosure has been numerically studied. The governing equations are solved contemporaneously by finite difference method to obtain the velocity, temperature and heat flux distributions. Turbulence has been modeled using the standard k-ε model. The change of convective and radiative Nusselt numbers with respect to time has been described. The analysis is carried out over a wide range of Rayleigh number from 10⁸ to 10¹⁰. The effect of this key parameter on temperature and velocity distributions, convective and radiative Nusselt numbers has been investigated. The results clearly demonstrate a significant effect of buoyancy ratio on unsteady turbulent heat transfer.

Язык оригинала	Английский
Название основной публикации	IOP Conference Series: Materials Science and Engineering
Издатель	Institute of Physics Publishing
Том	93
Издание	1
DOI	https://doi.org/10.1088/1757-899X/93/1/012008
Состояние	Опубликовано - 13 окт 2015
Событие	21st International Conference for Students and Young Scientists: Modern Technique and Technologies, MTT 2015 - Tomsk, Российская Федерация Продолжительность: 5 окт 2015 → 9 окт 2015

Другое

Другое	21st International Conference for Students and Young Scientists: Modern Technique and Technologies, MTT 2015
Страна	Российская Федерация
Город	Tomsk
Период	5.10.15 → 9.10.15

ASJC Scopus subject areas

Engineering(all)
Materials Science(all)

Доступ к документу

10.1088/1757-899X/93/1/012008

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Цитировать

Effect of buoyancy force on turbulent modes of complex heat transfer in an air-filled square cavity. / Miroshnichenko, I. V.; Sheremet, M. A.

IOP Conference Series: Materials Science and Engineering. Том 93 1. ред. Institute of Physics Publishing, 2015. 012008.

Результат исследований: Материалы для книги/типы отчетов › Материалы для конференции

Miroshnichenko, IV & Sheremet, MA 2015, Effect of buoyancy force on turbulent modes of complex heat transfer in an air-filled square cavity. в IOP Conference Series: Materials Science and Engineering. 1 ред., том. 93, 012008, Institute of Physics Publishing, 21st International Conference for Students and Young Scientists: Modern Technique and Technologies, MTT 2015, Tomsk, Российская Федерация, 5.10.15. https://doi.org/10.1088/1757-899X/93/1/012008

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AB - Turbulent natural convection with the interaction of surface radiation in square enclosure has been numerically studied. The governing equations are solved contemporaneously by finite difference method to obtain the velocity, temperature and heat flux distributions. Turbulence has been modeled using the standard k-ε model. The change of convective and radiative Nusselt numbers with respect to time has been described. The analysis is carried out over a wide range of Rayleigh number from 108 to 1010. The effect of this key parameter on temperature and velocity distributions, convective and radiative Nusselt numbers has been investigated. The results clearly demonstrate a significant effect of buoyancy ratio on unsteady turbulent heat transfer.

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