DEPENDENCE OF HEAT EXCHANGE IN AN EVAPORATING LIQUID FILM IN A MICROCHANNEL ON HEATER SIZE

DEPENDENCE OF HEAT EXCHANGE IN AN EVAPORATING LIQUID FILM IN A MICROCHANNEL ON HEATER SIZE Full article

Journal

Journal of Applied Mechanics and Technical Physics
ISSN: 0021-8944

Output data

Year: 2024, Volume: 65, Number: 5, Pages: 1-8 Pages count : 8

Tags

heat transfer simulation, thin films, numerical calculations, surface deformations, thermocapillary effect.

Authors

Kuznetsov V.V. ¹

Affiliations

1	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

Heat exchange in a liquid film moving along the microchannel bottom is calculated using the developed three-dimensional steady-state model of the liquid film motion. The liquid moves under the action of a cocurrent gas flow in the channel, with a square heater located at its bottom. In this case, the action of all the main physical factors during their interaction is taken into account: diffusive/convective heat transfer, dependence of the liquid properties on temperature, thermocapillary effect, occurrence/growth of surface deformations, and evaporation (condensation) of the liquid. It is revealed that heater size significantly affects temperature fields, surface deformations, and temperature extremes. An equation for calculating the greatest excess of mean temperature achieved on the substrate is derived.

Kuznetsov V.V.
DEPENDENCE OF HEAT EXCHANGE IN AN EVAPORATING LIQUID FILM IN A MICROCHANNEL ON HEATER SIZE
Journal of Applied Mechanics and Technical Physics. 2024. V.65. N5. P.1-8.

Кузнецов В.В.
ЗАВИСИМОСТЬ ОТ РАЗМЕРА НАГРЕВАТЕЛЯ ТЕПЛООБМЕНА В ИСПАРЯЮЩЕЙСЯ ПЛЕНКЕ ЖИДКОСТИ В МИКРОКАНАЛЕ
Прикладная механика и техническая физика. 2024. Т.65. №5. С.103-111. DOI: 10.15372/PMTF202415513 РИНЦ

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