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International Journal of Fluid Mechanics Research

Published 6 issues per year

ISSN Print: 2152-5102

ISSN Online: 2152-5110

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: 1.1 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: 1.3 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: 0.0002 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: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

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NUMERICAL SIMULATION AND FUNDAMENTAL CHARACTERISTICS OF SURFACE FLOW GENERATED BY BUBBLY FLOWS

Volume 45, Issue 3, 2018, pp. 263-282
DOI: 10.1615/InterJFluidMechRes.2018021875
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ABSTRACT

The motivation of this paper is to determine the characteristics of the surface flow induced by a bubble plume, which depends on the gas flow rate, bubble size, and internal two-phase flow structure of the bubbly flow. This paper is concerned with the numerical analysis of a surface flow generation process by buoyant bubbles in the two-dimensional and three-dimensional flow analysis based on the Eulerian-Lagrangian model. This is formulated with emphasis on the translational motion of bubbles. The technique of utilizing a surface flow generated by a bubbly flow could be employed as an effective way to control and collect the surface-floating substances in naval systems, lakes, seas, rivers, and oceans, as well as in various kinds of engineering processes involving a free surface. However, the detailed mechanism of the surface flow generation process has not previously been measured. The aim of this study is to clarify the applicability of a bubbling jet flow in order to control the transportation of surface-floating substances on a free surface. The numerical results presented in this paper reveal the characteristics of the fluid dynamics in the surface flow generation process. Furthermore, parametric dependency of the surface flow structure on the bubbling conditions is shown. The results presented in this paper clarify that the surface velocity profile that can be predicted by the Eulerian-Lagrangian model is in good agreement with the results of the experiments shown in our earlier paper. The surface flow is effectively generated in the case of a bubble plume compared to a liquid jet flow because a distortion point appears in the vicinity of the surface. The study also illustrates that the effective thickness of the surface flow is much less in the case of a free surface than in the case of a nonslip condition. The effective thickness of the surface flow increases when a liquid jet flow is provided instead of the bubble plume. The surface flow involves a wavy fluctuation under the free surface.

CITED BY
  1. Nguyen Viet-Bac, Do Quoc-Vu, Pham Van-Sang, An OpenFOAM solver for multiphase and turbulent flow, Physics of Fluids, 32, 4, 2020. Crossref

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