HEAT CONDUCTION AND HEAT EXCHANGE IN TECHNOLOGICAL PROCESSES

NONSTATIONARY HEAT AND MASS TRANSFER
IN EVAPORATIVE COOLING OF FLOWING LIQUID FILMS

G. V. Dashkov, E. F. Nogotov,*
N. V. Pavlyukevich, and V. D. Tyutyuma

UDC 536.24

A mathematical model of nonstationary evaporative cooling 
of a laminar liquid film flowing down a vertical surface in its blowing 
with a countercurrent steam-air flow has been developed. The problem 
of heat and mass transfer has been formulated in a conjugate statement. 
The calculated data on the time change in the temperature and concentration 
fields in the steam-air flow and the liquid film as well as in the 
density of the heat flux on the flowing-film surface have been given.

*Deceased

A. V. Luikov Heat and Mass Transfer Institute, National 
Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, 
Belarus; email: dgv@hmti.ac.by. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 79, No. 1, pp. 3-10, January-February, 2006. 
Original article submitted June 20, 2005.