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Journal of Enhanced Heat Transfer

年間 8 号発行

ISSN 印刷: 1065-5131

ISSN オンライン: 1563-5074

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: 2.3 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: 1.8 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: 0.00037 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: 0.6 SJR: 0.433 SNIP: 0.593 CiteScore™:: 4.3 H-Index: 35

Indexed in

NUMERICAL INVESTIGATION OF THE EFFECTS OF THE NUMBER OF RADIAL LONGITUDINAL FINS ON THE MELTING OF PARAFFIN WAX IN A CYLINDRICAL ANNULUS

巻 23, 発行 4, 2016, pp. 315-348
DOI: 10.1615/JEnhHeatTransf.2017019269
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要約

A numerical simulation of the melting process of a phase-change material (PCM) in a horizontal cylindrical annulus has been studied with and without heat transfer enhancement techniques. In this study, longitudinal fins were used to enhance heat transfer in a cylindrical annulus. A numerical study was carried out for melting of paraffin wax, with and without fins, using the Fluent finite-volume code. Three configurations of a cylindrical annulus with a constant wall temperature of the inner pipe were studied: (1) without fins, (2) with four fins, and (3) with eight fins. To analyze the thermal behavior of the system, the results of the presented numerical simulation are used to show the movement of the melting front in the cylindrical annulus for the three aforementioned configurations. The results show that comparatively high heat transfer was achieved in the cases with eight and four fins compared to the plain annulus: 90% and 73% melt fractions were easily achieved in 1000 and 900 s in the cases of a cylindrical annulus with eight and four fins, respectively, and the heat transfer and melting rate become slower after theses time limits. To generalize the results, two dependent dimensionless parameters are used: The Nusselt number (Nu) and melt fraction of the PCM. The product of the Stefan and Fourier numbers (FoSte) takes into account the transient phase change and heat conduction and serves as an independent dimensionless parameter. The trends presents in the dimensional analysis are a step toward generalization and can be used in the design of PCM-based heat storage systems.

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