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Laminar boundary layer flow and heat transfer past a flat plate for a liquid of variable viscosity
Author(s) -
Hanna O. T.,
Myers J. E.
Publication year - 1961
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690070318
Subject(s) - laminar flow , prandtl number , boundary layer , thermodynamics , viscosity , mechanics , heat transfer , film temperature , boundary layer thickness , heat transfer coefficient , physics , nusselt number , reynolds number , turbulence
A solution for the problem of incompressible laminar boundary‐layer flow and heat transfer with variable viscosity is presented. Because of the variation of viscosity with temperature the velocity and temperature fields interact mutually. This necessitates the simultaneous solution of the momentum and energy equations. The analysis is carried out for the case where heating begins at the leading edge of the plate. The results show the effect of the important variable property parameters on the friction factor and the heat transfer coefficient. These parameters are seen to be the temperature difference between wall and free stream, the viscosity temperature variation law, and the Prandtl number at the wall. The results are applicable to liquids.