Effects of Temperature-Dependent Viscosity on Forced Convection Inside a Porous Medium |
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Authors: | K Hooman H Gurgenci |
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Institution: | (1) School of Engineering, The University of Queensland, Brisbane, Australia |
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Abstract: | Considering the exponential viscosity–temperature relation, effect of temperature-dependent viscosity on forced convection
of a liquid through a porous medium, bounded by isoflux parallel plates, is investigated numerically based on the general
model of momentum transfer. Local effects of viscosity variation on the distribution of velocity and temperature are analyzed.
Moreover, global aspects of the problem are investigated where corrections are proposed for total pressure drop and the fully
developed Nusselt number, in the form of out/in viscosity ratio. Results are obtained over a wide range of permeabilities
from clear (of solid material) fluid to very low permeability, where for constant properties one expects a nearly slug flow. |
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Keywords: | Forced convection Property variation Porous media Thermohydraulic |
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