The steady laminar fully developed flow between two isothermal parallel plates is studied in this paper. The investigation concerns air, engine oil, and water taking into account the variation of all physical properties (⁠μ⁠, k⁠, and ρ⁠) with temperature. The results are obtained with the direct numerical solution of the governing equations and cover large temperature differences not treated until now. The largest differences of volume flow rate and vertical heat flux from the corresponding constant properties values reach 1568% and 2120% in air, 139% and 247% in oil, and 62% and 55% in water.

Issue Section:
Technical Briefs
Keywords:
natural convection, confined flow, laminar flow, flow instability, aerodynamics, oils, water, parallel plates, natural convection, variable properties, air, oil, water
Topics:
Flow (Dynamics), Heat flux, Natural convection, Plates (structures), Temperature, Water
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