Flow patterns and CHF in a locally heated liquid film shear-driven in a minichannel

D. V. Zaitsev, O. A. Kabov

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

Thin and very thin (less than 10 μm) liquid films driven by a forced gas/vapor flow (stratified or annular flows), i.e. sheardriven liquid films in a narrow channel is a promising candidate for the thermal management of advanced semiconductor devices in earth and space applications. Development of such technology requires significant advances in fundamental research, since the stability of joint flow of locally heated liquid film and gas is a rather complex problem. The paper focuses on the recent progress that has been achieved by the authors through conducting experiments. Experiments with water in flat channels with height of H=1.2-2.0 mm (mini-scale) show that a liquid film driven by the action of a gas flow is stable in a wide range of liquid/gas flow rates. Map of isothermal flow regime was plotted and the length of smooth region was measured. Even for sufficiently high gas flow rates an important thermocapillary effect on film dynamics occurs. Scenario of film rupture differs widely for different flow regimes. It is found that the critical heat flux for a shear driven film can be 10 times higher than that for a falling liquid film, and exceeds 400 W/cm2 in experiments with water for moderate liquid flow rates. This fact makes use of shear-driven liquid films promising in high heat flux chip cooling applications.

Язык оригиналаАнглийский
Название основной публикацииASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting, ICNMM2010
Страницы375-382
Число страниц8
ИзданиеPARTS A AND B
DOI
СостояниеОпубликовано - 2010
СобытиеASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2010 Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting - Montreal, QC, Канада
Продолжительность: 1 авг 20105 авг 2010

Другое

ДругоеASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2010 Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting
СтранаКанада
ГородMontreal, QC
Период1.8.105.8.10

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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  • Цитировать

    Zaitsev, D. V., & Kabov, O. A. (2010). Flow patterns and CHF in a locally heated liquid film shear-driven in a minichannel. В ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting, ICNMM2010 (PARTS A AND B ред., стр. 375-382) https://doi.org/10.1115/FEDSM-ICNMM2010-31209