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Interfacial Phenomena and Heat Transfer

Published 4 issues per year

ISSN Print: 2169-2785

ISSN Online: 2167-857X

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.5 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.2 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00018 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.11 SJR: 0.286 SNIP: 1.032 CiteScore™:: 1.6 H-Index: 10

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COMPUTATIONAL FLUID DYNAMICS SIMULATION OF WATER-OIL TWO-PHASE SLUG FLOW IN MICROCHANNELS

Volume 7, Issue 4, 2019, pp. 365-376
DOI: 10.1615/InterfacPhenomHeatTransfer.2020032281
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ABSTRACT

Oil-water slug flow in microchannels is one of the basic problems of pore-scale seepage. In recent years, more computational fluid dynamics (CFD) simulations concerning two-phase flow in microchannels have been developed. However, few simulations have studied the flow resistance of oil slug in microchannels. In this study, a CFD method was used to simulate the movement of slug in oil-water two-phase flow in circular microchannels with diameters of 20 and 200 μm. The flow resistances of oil slugs were investigated at different contact angles. The effects of the length and speed of the movement of oil slugs on their flow resistances were analyzed. The simulation results indicate that the shape of the oil slug as well as the flow pattern are influenced by the oil contact angle, defined as the angle between the oil-water and oil-wall interfaces. A certain number of vortices appear in the front, back, and inside of an oil slug when the oil contact angle is 60°. However, few vortices arise at the back and front of an oil slug when the oil contact angle is 140°. If the oil contact angle is less than 30°, the microchannel wall is strongly lipophilic and the oil slug beomes an annular film.

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