HEAT TRANSFER FOR VERTICAL SURFACES WITH
DISCRETE FINS IN THE CASE OF FREE CONVECTION

V. G. Gorobets

UDC 536.245

A mathematical model of heat transfer has been developed 
and numerical calculations for a vertical surface with discrete fins 
arranged in staggered order have been carried out. The model accounts 
for the influence of the heat-conduction properties of the finning 
material and of the fin size on the conditions of heat transfer. A 
comparison of the results obtained with the existing numerical and 
experimental data has been made. This comparison shows that the discretization 
intensifies the heat-transfer process by 50-70%, and neglect of 
the heat-conduction properties of the fins leads to overstated values 
of the removed heat fluxes.

Institute of Technical Thermal Physics, National Academy 
of Sciences of Ukraine, Kiev, Ukraine. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 75, No. 5, pp. 100-107, September-October, 2002. 
Original article submitted November 26, 2001.

JEPTER7492020027
JEPTER749207