INFLUENCE OF A VARIABLE FLUID VISCOSITY
ON HEAT EXCHANGE IN LAMINAR CONVECTION

N. V. Selivanov

UDC 536:24

The influence of a variable fluid viscosity on heat exchange 
and friction in laminar free and forced convection near the isothermal 
surface has been investigated numerically within a wide range of variation 
of Pr numbers for both the heated and cooled surfaces. The influence 
of the parameter  on the thermal and dynamic characteristics of the boundary 
layer has been revealed. The solutions agree well with the experimental data 
on the local heat exchange and the temperature 
field. The equations generalizing 
the numerical solutions have been derived to calculate heat exchange and friction 
in the case of a variable fluid viscosity.

Astrakhan State Technical University, Astrakhan, Russia. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 6, pp. 
133-136, November-December, 2002. Original article submitted 
June 6, 2001; revision submitted May 23, 2002.

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