Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection

The effects of viscous energy dissipation on the forced convection heat transfer between an unconfined rotating isothermal circular cylinder and surrounding viscous fluids are numerically investigated. The heat transfer characteristics are investigated for the range of conditions of the Reynolds num...

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Autores principales:	A.A. Soares, A. Rouboa
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Viscous heating Rotating cylinder Nusselt number Brinkman number Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/6369b3b910e44fff924795391280acea
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spelling	oai:doaj.org-article:6369b3b910e44fff924795391280acea2021-11-18T04:49:56ZViscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection2352-484710.1016/j.egyr.2021.09.045https://doaj.org/article/6369b3b910e44fff924795391280acea2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352484721008519https://doaj.org/toc/2352-4847The effects of viscous energy dissipation on the forced convection heat transfer between an unconfined rotating isothermal circular cylinder and surrounding viscous fluids are numerically investigated. The heat transfer characteristics are investigated for the range of conditions of the Reynolds number Re = 1-40, Prandtl number Pr = 1-100 (the Peclet number ranges between 1 and 4000), dimensionless rotational velocities α = 0-3, and Brinkman number Br = 0-1. For the steady flow regime, the isotherm patterns are presented for the range of values of Reynolds number, Brinkman number, Prandtl number, and rotational velocity. For low Peclet numbers (Re × Pr), the heat generated by the viscous dissipation is not efficiently removed which, promotes the appearance of hot spot zones. The variation of the local and average Nusselt numbers on the cylinder surface shows the effects of Brinkman number, Prandtl number, and rotational velocity on heat transfer between a rotating isothermal cylinder and a viscous flow for the range of conditions studied.A.A. SoaresA. RouboaElsevierarticleViscous heatingRotating cylinderNusselt numberBrinkman numberElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENEnergy Reports, Vol 7, Iss , Pp 83-97 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Viscous heating Rotating cylinder Nusselt number Brinkman number Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Viscous heating Rotating cylinder Nusselt number Brinkman number Electrical engineering. Electronics. Nuclear engineering TK1-9971 A.A. Soares A. Rouboa Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
description	The effects of viscous energy dissipation on the forced convection heat transfer between an unconfined rotating isothermal circular cylinder and surrounding viscous fluids are numerically investigated. The heat transfer characteristics are investigated for the range of conditions of the Reynolds number Re = 1-40, Prandtl number Pr = 1-100 (the Peclet number ranges between 1 and 4000), dimensionless rotational velocities α = 0-3, and Brinkman number Br = 0-1. For the steady flow regime, the isotherm patterns are presented for the range of values of Reynolds number, Brinkman number, Prandtl number, and rotational velocity. For low Peclet numbers (Re × Pr), the heat generated by the viscous dissipation is not efficiently removed which, promotes the appearance of hot spot zones. The variation of the local and average Nusselt numbers on the cylinder surface shows the effects of Brinkman number, Prandtl number, and rotational velocity on heat transfer between a rotating isothermal cylinder and a viscous flow for the range of conditions studied.
format	article
author	A.A. Soares A. Rouboa
author_facet	A.A. Soares A. Rouboa
author_sort	A.A. Soares
title	Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
title_short	Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
title_full	Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
title_fullStr	Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
title_full_unstemmed	Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
title_sort	viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/6369b3b910e44fff924795391280acea
work_keys_str_mv	AT aasoares viscousdissipationintheheattransferbetweenarotatingcylinderandviscousmediaunderforcedconvection AT arouboa viscousdissipationintheheattransferbetweenarotatingcylinderandviscousmediaunderforcedconvection
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Viscous dissipation in the heat transfer between a rotating cylinder and viscous media under forced convection

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