Journal ArticleDOI
Wide-ranging survey on the laminar flow of individual Taylor bubbles rising through stagnant Newtonian liquids
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TLDR
A wide-ranging numerical survey of the rising of individual Taylor bubbles through vertical columns of stagnant Newtonian liquid in laminar flow regime is presented in this paper, where the authors applied the CFD procedure applied is based in the volume of fluid (VOF) methodology of the commercial package Ansys FLUENT.About:
This article is published in International Journal of Multiphase Flow.The article was published on 2012-07-01. It has received 78 citations till now. The article focuses on the topics: Slug flow & Laminar flow.read more
Citations
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Journal ArticleDOI
Review on vertical gas–liquid slug flow
TL;DR: A review of the literature on vertical gas-liquid slug flow, with Newtonian fluids, from 1943 to 2015, covering theoretical, experimental and numerical approaches, is reviewed in this article.
Journal ArticleDOI
Film thickness measurements in liquid–liquid slug flow regimes
TL;DR: In this article, the effects of sample slug length and carrier phase fluidic properties on the film were examined over a range of Capillary numbers, and the experimental results showed that the film is not constant along the length of the slug; however above a threshold value for slug length, a region of constant film thickness exists.
Journal ArticleDOI
Review and extensions to film thickness and relative bubble drift velocity prediction methods in laminar Taylor or slug flows
James A. Howard,Patrick A. Walsh +1 more
TL;DR: In this paper, the hydrodynamics of the two-phase liquid-gas Taylor or "Slug" flow regime commonly encountered in micro and mini-channel flows are investigated and a new model is put forward for predicting bubble velocity in Taylor flows when the viscosity ratio between phases is low and velocity within the film becomes appreciable.
Journal ArticleDOI
Heat transfer and pressure drop characteristics of gas–liquid Taylor flow in mini ducts of square and rectangular cross-sections
TL;DR: In this article, the effects of fluid properties, flow parameters, and aspect ratio on the bubble shape, recirculation time, friction factor, and Nusselt number are discussed.
Journal ArticleDOI
A broadly-applicable unified closure relation for Taylor bubble rise velocity in pipes with stagnant liquid
TL;DR: In this article, the authors used a validated Computational Fluid Dynamics (CFD) approach to simulate the motion of Taylor bubbles in pipes; the interface is tracked with a Level-Set method implemented in a commercial code.
References
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Journal ArticleDOI
Volume of fluid (VOF) method for the dynamics of free boundaries
C.W Hirt,B. D. Nichols +1 more
TL;DR: In this paper, the concept of a fractional volume of fluid (VOF) has been used to approximate free boundaries in finite-difference numerical simulations, which is shown to be more flexible and efficient than other methods for treating complicated free boundary configurations.
Journal ArticleDOI
A continuum method for modeling surface tension
TL;DR: In this paper, a force density proportional to the surface curvature of constant color is defined at each point in the transition region; this force-density is normalized in such a way that the conventional description of surface tension on an interface is recovered when the ratio of local transition-reion thickness to local curvature radius approaches zero.
Journal ArticleDOI
The mechanics of large bubbles rising through extended liquids and through liquids in tubes
TL;DR: In this article, the authors describe measurements of the shape and rate of rise of air bubbles varying in volume from 1·5 to 200 cm. 3 when they rise through nitrobenzene or water.
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