The influence of evaporation in shear-driven liquid film on heat removal from local heater

Elizaveta Gatapova, Oleg Kabov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The present work focuses upon shear-driven liquid film evaporative cooling of high heat flux local heater. Thin evaporating liquid films may provide very high heat transfer rates and can be used for cooling of high power microelectronic systems. Thermocapillary convection in a liquid film falling down a locally heated substrate has recently been extensively studied. However, non-uniform heating effects remain only partially understood for shear-driven liquid films. The combined effects of evaporation, thermocapillarity and gas dynamics as well as formation of microscopic adsorbed film have not been studied. The effect of evaporation on heat and mass transfer for 2D joint flow of a liquid film and gas is theoretically and numerically investigated. The convective terms in the energy equations are taken into account. The calculations reveal that evaporation from film surface essential influences on heat removal from local heater. It is shown that the thermal boundary layer plays significant role for cooling local heater by evaporating thin liquid film. Measured by an infrared scanner temperature distribution at the film surface is compared with numerical data. Calculations satisfactorily describe the maximal surface temperature value.

Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006
Pages341-346
Number of pages6
Volume2006 A
Publication statusPublished - 2006
Event4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006 - Limerick, Ireland
Duration: 19 Jun 200621 Jun 2006

Other

Other4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006
CountryIreland
CityLimerick
Period19.6.0621.6.06

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Gatapova, E., & Kabov, O. (2006). The influence of evaporation in shear-driven liquid film on heat removal from local heater. In Proceedings of the 4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006 (Vol. 2006 A, pp. 341-346)