Critical heat flux as a function of heater size for a liquid boiling in a large enclosure

Gogonin, I. I.; Kutateladze, S. S.

doi:10.1007/bf00860899

Cited by 33 publications

(10 citation statements)

References 7 publications

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“…Regarding CHF, a gradual reduction is observed for both surfaces with increasing heater size. This trend conforms to several other studies [33][34][35]. However, the CHF was found to be ΔT sat (K) 2 significantly enhanced relative to the uncoated surfaces for all the nanocoated heater sizes.…”

Section: Effect Of Heater Sizesupporting

confidence: 93%

“…The relative CHF on uncoated heaters follows a similar decreasing trend with increasing L 0 as Saylor et al's[36] data and the curve fit. This trend was further confirmed by other studies[33][34][35]46]. Bar-Cohen and McNeil's…”

supporting

confidence: 91%

“…On the other hand, Park and Bergles [32] reported that the BHT was insensitive to the heater size. Gogonin and Kutateladze [33] conducted experiments by varying the heater size to estimate the effect on CHF of ethanol at an orientation of 0°(horizontal, facing upwards) and 180°(facing downwards). They reported that CHF is insensitive to the heater size at an inclination angle of 0°.…”

Section: Introductionmentioning

confidence: 99%

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Effects of pressure, orientation, and heater size on pool boiling of water with nanocoated heaters

Kwark¹,

Amaya²,

Kumar³

et al. 2010

International Journal of Heat and Mass Transfer

126

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Section: Effect Of Heater Sizesupporting

confidence: 93%

supporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of pressure, orientation, and heater size on pool boiling of water with nanocoated heaters

Kwark¹,

Amaya²,

Kumar³

et al. 2010

International Journal of Heat and Mass Transfer

126

View full text Add to dashboard Cite

“…Several subsequent experimental studies [86][87][88][89] investigated pool boiling from decreasing heat input areas and confirmed an increase in critical heat flux.…”

Section: Dryout Mechanisms and Heater Size Dependencymentioning

confidence: 83%

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Weibel

Garimella

2013

Advances in Heat Transfer

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Owing to their high reliability, simplicity of manufacture, passive operation, and effective heat transport, flat heat pipes and vapor chambers are used extensively in the thermal management of electronic devices. The need for concurrent size, weight, and performance improvements in high-performance electronics systems, without resort to active liquid-cooling strategies, demands passive heat spreading technologies that can dissipate extremely high heat fluxes from small hot spots. In response to these daunting application-driven trends, a number of recent investigations have focused on the design, characterization, and fabrication of ultra-thin vapor chambers for proximate heat spreading away from these hot spots. The predominant transport mechanisms and operational limits have been found to be different under these conditions relative to conventional low-power heat pipes. Noteworthy advances in the fundamental understanding of evaporation and boiling from porous microstructures fed by capillary action, and improvements in vapor chamber characterization, modeling, design, and fabrication techniques are reviewed. Characterization of evaporation and boiling from idealized and realistic wick structures, observation of vapor formation regimes as a function of operating conditions, assessment of fluid dryout limitations, design of novel multi-scale and nanostructured wicks for enhanced transport, and incorporation of these high heat flux transport phenomena into device-level models are discussed. These recent developments have successfully extended the maximum operating heat flux limits of vapor chambers.2

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“…However, it is to be noted that transient heat flux is significantly fluctuating in comparison to the steady state heat flux [3,[34][35][36] …”

Section: Transition Boiling Modelmentioning

confidence: 96%

Numerical simulation of immersion quenching process of an engine cylinder head

Srinivasan

Moon

Chapman

et al. 2010

Applied Mathematical Modelling

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a b s t r a c tIn this article, we present the numerical simulations of a real cylinder head quench cooling process employing a newly developed boiling phase change model using the commercial CFD code AVL-FIRE v8.5. Separate computational domains constructed for the solid and liquid regions are numerically coupled at the interface of the solid-liquid boundaries using the AVL-Code-Coupling-Interface (ACCI) feature. The boiling phase change process triggered by the dipping hot metal and the ensuing two-phase flow is handled using an Eulerian two-fluid method. Multitude of flow features such as vapor pocket generation, bubble clustering and their disposition, are captured very effectively during the computation, in addition to the variation of the temperature pattern within the solid region. A comparison of the registered temperature readings at different monitoring locations with the numerical results generates an overall very good agreement and indicates the presence of intense non-uniformity in the temperature distribution within the solid. Overall, the predictive capability of the new boiling model is well demonstrated for real-time quenching applications.

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Critical heat flux as a function of heater size for a liquid boiling in a large enclosure

Cited by 33 publications

References 7 publications

Effects of pressure, orientation, and heater size on pool boiling of water with nanocoated heaters

Effects of pressure, orientation, and heater size on pool boiling of water with nanocoated heaters

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Numerical simulation of immersion quenching process of an engine cylinder head

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