Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation

A. Gómez López, B. Estela García Rojas, R. O. Vargas Aguilar, L. A. Martínez-Suástegui

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

© Springer International Publishing Switzerland 2015. The problem of laminar opposing mixed convection inside a two-dimensional rectangular enclosure with asymmetrical heating is studied numerically using the vorticity-stream function formulation of the Navier-Stokes and energy equations. The model considers viscous dissipation and viscosity is assumed to vary with temperature according to an exponential relation, while other fluid properties are considered constant. Numerical experiments have been performed for fixed values of the geometrical parameters, Reynolds number of Re = 20, Prandtl number of Pr = 3,060, a range of Richardson numbers from 0 to 10, and Brinkman numbers ranging between 0 to 40. Streamlines, temperature contours, maximum fluid temperature and average Nusselt number at both walls are obtained. The results show that combined viscous dissipation and variable fluid viscosity can be important in the overall flow and heat transfer characteristics.
Original languageAmerican English
Title of host publicationMixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation
Pages253-259
Number of pages227
DOIs
StatePublished - 1 Jan 2015
EventEnvironmental Science and Engineering (Subseries: Environmental Science) -
Duration: 1 Jan 2015 → …

Publication series

NameEnvironmental Science and Engineering (Subseries: Environmental Science)
ISSN (Print)1863-5520

Conference

ConferenceEnvironmental Science and Engineering (Subseries: Environmental Science)
Period1/01/15 → …

Fingerprint

Mixed convection
Enclosures
Viscosity
Fluids
Prandtl number
Nusselt number
Vorticity
Temperature
Reynolds number
Heat transfer
Heating
Experiments

Cite this

Gómez López, A., Estela García Rojas, B., Vargas Aguilar, R. O., & Martínez-Suástegui, L. A. (2015). Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. In Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation (pp. 253-259). (Environmental Science and Engineering (Subseries: Environmental Science)). https://doi.org/10.1007/978-3-319-11487-3_15
Gómez López, A. ; Estela García Rojas, B. ; Vargas Aguilar, R. O. ; Martínez-Suástegui, L. A. / Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. 2015. pp. 253-259 (Environmental Science and Engineering (Subseries: Environmental Science)).
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Gómez López, A, Estela García Rojas, B, Vargas Aguilar, RO & Martínez-Suástegui, LA 2015, Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. in Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. Environmental Science and Engineering (Subseries: Environmental Science), pp. 253-259, Environmental Science and Engineering (Subseries: Environmental Science), 1/01/15. https://doi.org/10.1007/978-3-319-11487-3_15

Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. / Gómez López, A.; Estela García Rojas, B.; Vargas Aguilar, R. O.; Martínez-Suástegui, L. A.

Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. 2015. p. 253-259 (Environmental Science and Engineering (Subseries: Environmental Science)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Gómez López A, Estela García Rojas B, Vargas Aguilar RO, Martínez-Suástegui LA. Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. In Mixed convection in a rectangular enclosure with temperature-dependent viscosity and viscous dissipation. 2015. p. 253-259. (Environmental Science and Engineering (Subseries: Environmental Science)). https://doi.org/10.1007/978-3-319-11487-3_15