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Journal articleWray AW, Papageorgiou DT, Craster RV, et al., 2014,
Electrostatic Suppression of the "Coffee Stain Effect"
, LANGMUIR, Vol: 30, Pages: 5849-5858, ISSN: 0743-7463- Author Web Link
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- Citations: 58
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Journal articleKarapetsas G, Sahu KC, Sefiane K, et al., 2014,
Thermocapillary-Driven Motion of a Sessile Drop: Effect of Non-Monotonic Dependence of Surface Tension on Temperature
, LANGMUIR, Vol: 30, Pages: 4310-4321, ISSN: 0743-7463- Author Web Link
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- Citations: 97
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Journal articleXie Z, Pavlidis D, Percival JR, et al., 2014,
Adaptive unstructured mesh modelling of multiphase flows
, International Journal of Multiphase Flow, ISSN: 0301-9322Multiphase flows are often found in industrial and practical engineering applications, including bubbles, droplets, liquid film and waves. An adaptive unstructured mesh modelling framework is employed here to study interfacial flow problems, which can modify and adapt anisotropic unstructured meshes to better represent the underlying physics of multiphase problems and reduce computational effort without sacrificing accuracy. The numerical framework consists of a mixed control volume and finite element formulation, a 'volume of fluid'-type method for the interface capturing based on a compressive control volume advection method and second-order finite element methods. The framework also features a force-balanced algorithm for the surface tension implementation, minimising the spurious velocities often found in such flows. Numerical examples of the Rayleigh-Taylor instability and a rising bubble are presented to show the ability of this adaptive unstructured mesh modelling framework to capture complex interface geometries and also to increase the efficiency in multiphase flow simulations.
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Journal articleZadrazil I, Matar OK, Markides CN, 2014,
An experimental characterization of downwards gas-liquid annular flow by laser-induced fluorescence: flow regimes and film statistics
, International Journal of Multiphase Flow, Vol: 60, Pages: 87-102, ISSN: 0301-9322Downwards co-current gas–liquid annular flows were studied experimentally and characterized. Anadvanced optical laser-based measurement technique, namely Planar Laser-Induced Fluorescence (PLIF),was used for the visualization of the annular flow over a range of liquid Reynolds numbers ReL ¼ 306—1532 and gas Reynolds numbers ReG ¼ 0—84600. Four distinct flow regimes, namely the ‘dual-wave’, ‘thick ripple’, ‘disturbance wave’ and ‘regular wave’ regimes, have been identified based on qualitative information and a consequent quantitative analysis that provided information on the film thickness, interface and wave statistics, and gas entrainment into the liquid film. The mean film thickness data are generally in good agreement with previous studies. Evidence suggests that the turbulent gas phase affects strongly the shape of the interface, and that the mechanism for gas entrainment into the liquid film is strongly reliant on the existence of large-amplitude waves.
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Journal articleGherase D, Conroy D, Matar OK, et al., 2014,
Experimental and Theoretical Study of the Emergence of Single Chirality in Attrition-Enhanced Deracemization
, CRYSTAL GROWTH & DESIGN, Vol: 14, Pages: 928-937, ISSN: 1528-7483- Cite
- Citations: 31
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Journal articleSaenz PJ, Valluri P, Sefiane K, et al., 2014,
On phase change in Marangoni-driven flows and its effects on the hydrothermal-wave instabilities
, PHYSICS OF FLUIDS, Vol: 26, ISSN: 1070-6631- Author Web Link
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- Citations: 33
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Journal articleIbarra R, Markides CN, Matar OK, 2014,
A review of liquid-liquid flow patterns in horizontal and slightly inclined pipes
, Multiphase Science and Technology, Vol: 26, Pages: 171-198, ISSN: 0276-1459© 2014 by Begell House, Inc. This paper presents a review of the co-current flow of two immiscible liquids in horizontal and slightly inclined pipes. Liquid-liquid flows are present in a wide variety of industrial processes, such as chemicals, pharmaceuticals, and food processing. However, this phenomenon is mainly studied in the oil industry, especially in the analysis of oil-water mixtures encountered in long transportation pipelines from the wellhead to the processing facility. The hydrodynamic behavior of liquid-liquid flows is more complex than that of gas-liquid flows because of density ratio, viscosity ratio, interfacial forces, and pipe wettability. This means that a significant number of different flow patterns can be obtained from different fluid properties and pipe characteristics. Furthermore, the flow pattern classification of liquid-liquid flows is arbitrary and several researchers use their own classification, complicating comparison and analysis of flow pattern maps. In this paper, a unified flow pattern classification for liquid-liquid flow is proposed. This classification enables the direct comparison of flow pattern maps for further analysis.
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Journal articleKuchin IV, Matar OK, Craster RV, et al., 2014,
Modeling the effect of surface forces on the equilibrium liquid profile of a capillary meniscus
, SOFT MATTER, Vol: 10, Pages: 6024-6037, ISSN: 1744-683X- Author Web Link
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- Citations: 13
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Journal articleHeyes DM, Smith ER, Dini D, et al., 2014,
The method of planes pressure tensor for a spherical subvolume
, The Journal of Chemical Physics, Vol: 140, Pages: --- -
Journal articlePurvis JA, Mistry RD, Markides CN, et al., 2013,
An experimental investigation of fingering instabilities and growth dynamics in inclined counter-current gas-liquid channel flow
, PHYSICS OF FLUIDS, Vol: 25, ISSN: 1070-6631- Author Web Link
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- Citations: 5
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