In this paper, we study the steady laminar flow in a fluid-saturated porous medium channel bounded by two parallel plates with constant but unequal temperatures. One plate is moving with constant velocity while the other is stationary. For the porous medium, the Brinkman–Darcy–Forchheimer model is used. The investigation concerns engine oil, water, and air, taking into account the variation of their physical properties with temperature. The results are obtained with the direct numerical solution of the governing equations and cover large temperature differences. It is found that dynamic viscosity plays an important role on the results, which depart significantly from those of a fluid with constant properties when the temperature difference between the plates is large. Except that there are cases where the flow is restricted near the moving plate while at the lower part of the channel, the fluid is motionless.
Issue Section:
Technical Briefs
Keywords:
porous medium,
forced convection,
variable properties,
Couette flow,
channel flow,
Couette flow,
laminar flow,
porous materials,
viscosity
Topics:
Engines,
Flow (Dynamics),
Fluids,
Porous materials,
Temperature,
Viscosity,
Water,
Plates (structures)
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.Copyright © 2007
by American Society of Mechanical Engineers
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