Correction for Exponential Dependence of Viscosity on Temperature for Natural Convection by an Integral Method
Affiliation:
1. Department of Mechanical Engineering, University of Kansas, Lawrence, KS 66045
Abstract
It is common to correct for the effect of exponential dependence on inverse absolute temperature of the viscosity on the Nusselt number for laminar natural convection by multiplying the correlation for constant properties by a factor μ∞/μwn to obtain Nu=C Ra1/4μ∞/μwn. That there is a sound basis for the functional form of this corrective term is newly shown by employing an integral method to obtain closed-form solutions to the laminar boundary-layer equations for the case of a vertical plate of specified temperature immersed in such a liquid. The basis for the alternative means of correction by using the correlation for constant properties with viscosity evaluated at a special reference temperature is also shown.
Publisher
ASME International
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference14 articles.
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