Fluid Flow, Heat Transfer and Boiling in Micro-Channels

Yarin, L. P.; Mosyak, A.; Hetsroni, G.

doi:10.1007/978-3-540-78755-6

Cited by 86 publications

(57 citation statements)

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“…In addition, these results remain valid for flow in the micro-and large nano-channels with cross-sectional diameters of the order 300-500 nm with one-two order of magnitude reduction in the hydraulic diameter, see [12].…”

Section: Introductionmentioning

confidence: 71%

Liquid entrainment by gas flow along the interface of a liquid bridge

Gaponenko

Miadlun

Shevtsova

2011

Eur. Phys. J. Spec. Top.

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Abstract. We report the results of numerical and experimental studies of two-phase flows in an annulus. The geometry corresponds to a cylindrical liquid column co-axially placed into an outer cylinder with solid walls. Gas enters into the annular duct and entrains the initially quiescent liquid. The internal column consists of solid rods at the bottom and top, while the central part is a liquid bridge from a viscous liquid and kept in its position by surface tension. Silicone oil 5cSt was used as a test liquid and air and nitrogen as gases. An original numerical approach was developed to study the problem in complex geometry. The flow structure in the liquid is analyzed for a wide range of gas flow rates.

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Section: Introductionmentioning

confidence: 71%

Liquid entrainment by gas flow along the interface of a liquid bridge

Gaponenko

Miadlun

Shevtsova

2011

Eur. Phys. J. Spec. Top.

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“…The literature review on two-phase frictional pressure gradient in microchannels and minichannels can be found in tabular form in a number of textbooks [1][2][3][4][5].…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling of Interfacial Component for Two-Phase Frictional Pressure Gradient at Microscales

Awad

Muzychka

2014

Advances in Mechanical Engineering

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A simple approach for calculating the interfacial component of frictional pressure gradient in two-phase flow at microscales is presented. This approach is developed using superposition of three pressure gradients: single-phase liquid, single-phase gas, and interfacial pressure gradient. The proposed model can be transformed in two different ways: first, two-phase interfacial multiplier for liquid flowing alone ( 2 , ) as a function of two-phase frictional multiplier for liquid flowing alone ( 2 ) and the LockhartMartinelli parameter, , and, second, two-phase interfacial multiplier for gas flowing alone ( 2 , ) as a function of two-phase frictional multiplier for gas flowing alone ( 2 ) and the Lockhart-Martinelli parameter, . This proposed model allows for the interfacial pressure gradient to be easily modeled. Comparisons of the proposed model with experimental data for microchannels and minichannels and existing correlations for both and versus are presented.

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“…Due to their small size, compactness, and high surface-to-volume ratio, micro heat exchangers are most suitable for these requirements. One of the first applications of miniaturized devices for an enhanced heat transfer started in the microelectronic industry [1][2][3][4]. In order to guarantee an extended life time of electronic equipment, heat sinks with dissipation rates above 100 W cm -2 are necessary [5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Heat Transfer on Micro‐Structured Surfaces Based on Entropy Production

Jasch

Scholl

2013

Chem Eng & Technol

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Surface structures with a well-defined shape and dimension in a staggered arrangement were evaluated in terms of their capability to improve the singlephase convective heat transfer in channels with small dimensions. Two evaluation criteria were used: (i) the thermal efficiency index, defined by the ratio of heat transfer enhancement and pressure drop increase, and (ii) the irreversible entropy generation which is determined by the entropy production rates through heat conduction and dissipation. Beside experimental measurements, parametric studies were performed using computational fluid dynamics to establish the entropy generation rates within the heated flow channel.

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Fluid Flow, Heat Transfer and Boiling in Micro-Channels

Cited by 86 publications

References 0 publications

Liquid entrainment by gas flow along the interface of a liquid bridge

Liquid entrainment by gas flow along the interface of a liquid bridge

Modeling of Interfacial Component for Two-Phase Frictional Pressure Gradient at Microscales

Evaluation of Heat Transfer on Micro‐Structured Surfaces Based on Entropy Production

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