ESTABLISHMENT OF BOUNDARY CONDITIONS
FOR PROBLEMS OF CONDUCTIVE-CONVECTIVE
HEAT TRANSFER IN DISPERSE SYSTEMS

Yu. S. Teplitskii and M. V. Vinogradova

UDC 532.546

As a result of analysis of various boundary conditions 
for the elliptic-type heat conduction equation which describes a stationary 
thermal state of a filtered granular bed, it has been established 
that the first-kind condition used earlier in literature for the inlet 
to the bed is incorrect and responsible for the disturbance of the 
overall heat balance of the system. The necessity of using the Danckwerts 
conditions, which reflect the specificity of the input of a heat carrier 
into the bed and output from it in the presence of longitudinal conductive 
heat transfer, is shown.

A. V. Luikov Heat and Mass Transfer Institute, National 
Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, 
Belarus. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, 
No. 3, pp. 66-71, May-June, 2007. Original article submitted 
September 30, 2005.