Macro-to-microchannel transition in two-phase flow: Part 1 – Two-phase flow patterns and film thickness measurements

Ong, Chin Lee; Thome, John R.

doi:10.1016/j.expthermflusci.2010.08.004

Cited by 315 publications

(102 citation statements)

References 21 publications

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“…Ong and Thome [23] have proposed a new macro-to-micro channel criterion using the confinement number Co defined by Eq. (2) according to their experimental data and observed liquid films for different flow regimes.…”

Section: Criteria For Distinction Of Macroscale and Microscale Channelsmentioning

confidence: 99%

Fundamental issues, mechanisms and models of flow boiling heat transfer in microscale channels

Cheng

Xia

2017

International Journal of Heat and Mass Transfer

170

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This paper presents state-of-the-art review on the fundamental and frontier research of flow boiling heat transfer, mechanisms and prediction methods including models and correlations for heat transfer in microscale channels. First, fundamental issues of current research on flow boiling in microscale channels are addressed. These mainly include the criteria for macroscale and microscale channels. Then, studies on flow boiling heat transfer behaviours and mechanisms in microscale channels are presented. Next, the available correlations and models of flow boiling

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Section: Criteria For Distinction Of Macroscale and Microscale Channelsmentioning

confidence: 99%

Fundamental issues, mechanisms and models of flow boiling heat transfer in microscale channels

Cheng

Xia

2017

International Journal of Heat and Mass Transfer

170

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“…The way the flow structures are shaped depends on pressure, mass flux, hydraulic diameter, and the channel spatial orientation (vertical and horizontal). Therefore the flows are analyzed separately for horizontal channels [1,2] and vertical channels [3,4]. There are significant differences between the mechanisms of vapor bubble nucleation despite apparent similarities.…”

Section: Introductionmentioning

confidence: 99%

Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel

Kaniowski¹,

Poniewski²

2013

Archives of Thermodynamics

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Technology advancements entail a necessity to remove huge amounts of heat produced by today's electronic devices based on highly integrated circuits, major generators of heat. Heat transfer to boiling liquid flowing through narrow minichannels is a modern solution to the problem of heat transfer enhancement. The study was conducted for FC-72 boiling in a rectangular, vertical and asymmetrically heated minichannel that had depths of 0.5-1.

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“…Thus, it is very important to clarify the behavior of the microlayer and to develop a method to predict its thickness. Kandlikar (2002), Cheng et al (2007) and Ong and Thome (2011) have presented summaries on research of evaporation in microchannels. These reviews addressed channel classifications based on different methods, of which the typical methods are shown in Table 1 …”

Section: Introductionmentioning

confidence: 99%

Characteristics of Microlayer Formation and Heat Transfer in Mini/Microchannel Boiling Systems: A Review

Zhang¹,

Utaka²

2012

Frontiers in Heat and Mass Transfer

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This paper reviews recent research on microlayer formed by confined vapor bubbles during boiling in mini/microchannels. Experimental measurements, simulations and theoretical studies are described and compared. As a reference to clarify the mechanism for the formation of a microlayer, Taylor flow (i.e. elongated bubble flow in mini/micro circular tubes under adiabatic conditions and at Re << 1) and elongated bubble flow at high velocity, with consideration of the influence of inertia, are also reviewed. Compared to the steady adiabatic conditions, one of the distinct points for the boiling condition is that the bubble grows exponentially due to rapid evaporation of the microlayer. A pattern of two regions (i.e., surface tension-viscosity controlled and boundary layer controlled regions) seems to be presently acceptable to describe microlayer formation for a wide range of bubble growth velocity. In addition, the effect of microlayer evaporation on the boiling heat transfer in mini/microchannel is reviewed.

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Macro-to-microchannel transition in two-phase flow: Part 1 – Two-phase flow patterns and film thickness measurements

Cited by 315 publications

References 21 publications

Fundamental issues, mechanisms and models of flow boiling heat transfer in microscale channels

Fundamental issues, mechanisms and models of flow boiling heat transfer in microscale channels

Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel

Characteristics of Microlayer Formation and Heat Transfer in Mini/Microchannel Boiling Systems: A Review

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