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Special Topics & Reviews in Porous Media: An International Journal

Publication de 4  numéros par an

ISSN Imprimer: 2151-4798

ISSN En ligne: 2151-562X

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: 1.5 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: 0.5 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: 0.42 SJR: 0.217 SNIP: 0.362 CiteScore™:: 2.3 H-Index: 19

Indexed in

EFFECTS OF ALTERNATING CURRENT ELECTRIC FIELD AND THERMAL NON-EQUILIBRIUM ON THE BRINKMAN−BÉNARD INSTABILITY

Volume 8, Numéro 1, 2017, pp. 17-37
DOI: 10.1615/SpecialTopicsRevPorousMedia.v8.i1.20
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RÉSUMÉ

The onset of thermal convection in a layer of dielectric fluid-saturated Brinkman porous medium is investigated under the influence of a uniform vertical alternating current (AC) electric field using a local thermal non-equilibrium (LTNE) model considering the boundaries to be either free-free or rigid-rigid or lower rigid and upper free. It has been shown that the principle of exchange of stability is valid irrespective of the nature of boundaries. The eigenvalue problem is solved exactly for free-free boundaries and numerically using shooting method for rigid-rigid and lower rigid-upper free boundaries. The results for different velocity boundary conditions are found to be qualitatively similar but differ only quantitatively. It is observed that an increase in the AC electric Rayleigh number Rea is to augment heat transfer and to hasten the onset of convection, while an increase in the inter-phase heat transfer coefficient H, inverse Darcy number Da-1, and the ratio of viscosities Λ as well as a decrease in the porosity modified conductivity ratio γ is to delay the onset of electrothermal convection. Besides, increase in Rea and Da-1 as well as decrease in γ, H, and Λ is to reduce the size of convection cells. Asymptotic solutions for both small and large values of H for free-free boundaries compare well with those obtained from the exact formula.

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