Marangoni flow on pool boiling near critical heat flux

Pan, Ching‐Tsai; Lin, T.L.

doi:10.1016/0735-1933(89)90052-3

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…In this region heat transfer occurs primarily as a result of evaporation of the meniscus. Meniscus evaporation is an extremely complex process---it involves the adsorption characteristics of the heater-liquid system and possibly the enhanced thermal conductivity effects postulated by Pan and Lin (1989). Adsorption effects bring contact angle effects into play, as well.…”

Section: Heat Transfer Modelmentioning

confidence: 99%

Pool Boiling on Thin Heaters: The Role of Thermal Interaction Among Vapor Stems

Sadasivan

Unal

Nelson

1994

Proceeding of International Heat Transfer Conference 10

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Section: Heat Transfer Modelmentioning

confidence: 99%

Pool Boiling on Thin Heaters: The Role of Thermal Interaction Among Vapor Stems

Sadasivan

Unal

Nelson

1994

Proceeding of International Heat Transfer Conference 10

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“…Chyu (1987) attributed the evaporation of 790 macrolayer to the microlayer, much thinner than macrolayer and existing on the bottom of vapor stem. Pan and Lin (1989) proposed that thermo-capillary driven flow and evaporation at the interface are the main heat transfer mechanisms for the macrolayer evaporation. Furthermore, Wang and Pan (1991) developed a mathematical model and carried out a numerical method to simulate the thermo-capillary driven flow in the macrolayer.…”

Section: Introductionmentioning

confidence: 99%

Thermo‐capillary driven flow in macrolayer at high wall heat fluxes

Pan

1999

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

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The present work is to investigate nucleate boiling heat transfer at high heat fluxes, which is characterized by the existence of macrolayer. Two-region equations are proposed to simulate both thermo-capillary driven flow in the liquid layer and heat conduction in the solid wall. The numerical simulation results can clearly describe the activities of several multi vorticies in the macrolayer. These vorticies and evaporation at the vapor-liquid interface constitute a very efficient heat transfer mechanism to explain the high heat transfer coefficient of nucleate boiling heat transfer near CHF. This study also explores the flow pattern of macrolayer with a high conducting solid wall, e.g. copper, and hence the temperature is uniform at the liquid-solid interface, and the heat fluxes and the evaporation coefficient are found to have significant effect on flow pattern in the liquid layer. Furthermore, a parameter``evaporation fraction'' as well as``aspect ratio'' is proposed as an index to investigate the thermo-capillary driven flow system. The model prediction agrees reasonably well with the experimental data in the literature.

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