Prediction of the Circumferential Film Thickness Distribution in Horizontal Annular Gas-Liquid Flow

Hurlburt, Evan T.; Newell, T.A.

doi:10.1115/1.483269

Cited by 38 publications

(22 citation statements)

References 11 publications

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“…compared with values given by the Hulburt and Newell[23] model (diameters in millimeters).D m/0=0.95 (G=50kg/m 2 s) Downloaded by [National Sun Yat-Sen University] at 16:46 27 December 2014…”

mentioning

confidence: 99%

Flow Boiling Phenomenological Differences Between Micro- and Macroscale Channels

Tibiriçá

Ribatski

2015

Heat Transfer Engineering

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In this paper flow boiling phenomenological differences between micro and macroscale channels are discussed. Analyses of flow pattern results are performed in order to identify the main differences between micro-and macro-scale phenomena. Based on these analyses important flow pattern differences between micro and macro-scale behaviors were identified, and new phenomenological transition criteria based on flow patterns are presented. These criteria are based on the existence of stratified flow and on the degree of uniformity of the liquid film along the tube perimeter during annular flow.

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confidence: 99%

Flow Boiling Phenomenological Differences Between Micro- and Macroscale Channels

Tibiriçá

Ribatski

2015

Heat Transfer Engineering

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“…This model for the liquid film has been implemented by several researchers, including Owen and Hewitt [25] and Hurlburt and Newell [26], with some success. Dobran has shown that a model modifying this profile by reducing the turbulent mixing somewhat as the gas-liquid interface is approached gives much better agreement to physical behavior [27,28].…”

Section: Thin Film Particle Image Velocimentry In Annular Flowmentioning

confidence: 99%

Two-Phase Internal Flow: Toward a Theory of Everything

Shedd

2013

Heat Transfer Engineering

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Two-phase flow and heat transfer is still an area of intense research and great uncertainty. Even severely restricting ourselves to just annular, internal two-phase flow does not significantly improve our chances of accurately predicting either pressure gradients or heat transfer coefficients for an arbitrary tube geometry or fluid. This article summarizes a series of investigations that aim to identify the fundamental governing physics of internal two-phase flow: a Theory of Everything. The techniques developed to do so have been varied, and novel approaches are presented here. At the macro scale, simultaneous visualization and measurement of pressure gradient have led to interesting observations about the relationship between flow regimes and these fundamental macroscale behaviors. Since the macroscale behaviors are governed, for the most part, by behaviors at the micro scale, a number of techniques have been developed to study this near-wall behavior in quantitative detail. In particular, dye-assisted planar laser induced fluorescence has provided the first accurate portrayals of the gas-liquid interface annular flow, and microscale multiphase particle image velocimetry has been used to obtain the velocity within the liquid film of annular flow from within micrometers of the wall to velocities within the waves 500 µm or more from the wall. Statistical analyses of these data point toward a general approach for modeling wall shear in two-phase concurrent internal flow.

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“…The Wallis [4] correlation, as well as the correlations of Hurlburt and Newell [6], which proceed from the work of Asali et al [5], use film thickness to calculate interfacial shear. The correlation labeled Hurlburt and Newell (1) uses this dimensionless film thickness as part of a linear term, while that labeled Hurlburt and Newell (2) uses it in an exponential term.…”

Section: Correlationsmentioning

confidence: 99%

“…Among film thickness correlations, one of the earliest was that of Wallis [4], who proposed a friction factor scaling in an offset linear fashion with film thickness. More complex correlations have evolved, including those of Asali et al [5] and Hurlburt and Newell [6]. Some have used the proposed interrelationship to derive complete two-fluid models, such as those of Owen and Hewitt [7] and Hurlburt et al [8].…”

Section: Introductionmentioning

confidence: 98%