Abstract
The analyses focus on liquid laminar free convection along an isothermal vertical flat plate with consideration of variable fluid thermophysical properties. Measurements on velocity fields were made for water laminar free convection with different plate-surface temperature conditions by LDV (laser doppler velocimeter). The measured results agree very well with the calculated velocity profiles. Expressions for local Nusselt number, Nu x.∞, depending on the temperature gradient dθ/dη| η=0 are developed. A method is proposed to predict accurately the heat transfer of liquid laminar free convection by means of numerical solution of the temperature gradient.
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