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Thermophysics and Aeromechanics

2013 year, number 1

Liquid film and gas flow motion in a microchannel with evaporation

V.V. Kuznetsov1,2 and V.K. Andreev3,4
1Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3Institute of Computational Modelling SB RAS, Krasnoyarsk, Russia
4Siberian Federal University, Krasnoyarsk, Russia
Keywords: microchannel, evaporation, exact solutions, heat transfer
Pages: 17-28


The problem of stabilized combined motion of the gas flow and liquid film in a microchannel under the action of local heating with consideration of evaporation processes was set in selected variables. The exact solutions to the linearized problem were derived. The analytical formulas for calculation of the film thickness stabilized below the heater and the total rate of liquid evaporation were obtained. The technique of approximate calculation of total heat transfer is shown. Exemplary calculations are presented.