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Journal of Enhanced Heat Transfer

Publication de 8  numéros par an

ISSN Imprimer: 1065-5131

ISSN En ligne: 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

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A COMPUTATIONAL STUDY OF FLOW AND HEAT TRANSFER IN A CHANNEL WITH AN ARRAY OF NOVEL SURFACE ROUGHNESS ELEMENT

Volume 26, Numéro 2, 2019, pp. 145-166
DOI: 10.1615/JEnhHeatTransf.2018026911
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RÉSUMÉ

A novel surface roughness element is derived from the combination of dimple and protrusion elements. In the present study, the flow characteristics and heat transfer performance of a rectangular channel with this surface roughness element are computationally investigated and compared with hemispherical dimple and protrusion. The surface roughness element is a combination of dimple and protrusion such that it requires the same area of aflat surface but increases the available area for heat transfer. Various angular positions of this surface roughness element are considered for analysis and the thermal characteristics are compared with the dimpled channel for a fixed Reynolds number. The main geometric parameter considered is the relative location of the dimple and protrusion in the combination and its orientation with respect to the streamwise direction. Twelve different arrangements of this roughness element are compared and all flow and thermal results were obtained using computational fluid dynamics with a validated explicit algebraic Reynolds stress turbulence model. From this investigation, it is found that a particular combination (a double 45 dimple configuration) of this roughness element greatly improves the averaged local heat transfer of the corresponding surface and also creates a strong secondary flow, resulting in high heat transfer augmentation. The objective of this study was to determine the most optimal configuration in order to augment the heat transfer rates at same pumping power and to provide flow and thermal details of this new roughness element.

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CITÉ PAR
  1. Deng Yipan, Fu Lei, Liu Yinshui, Jiang Xin, Cui Yan, Wu Defa, Investigation on Heat Transfer Characteristics of Rectangular Channels With Internal Rough Surface Naturally Formed by Selective Laser Melting Three-Dimensional Printing, Journal of Fluids Engineering, 144, 11, 2022. Crossref

  2. Jia Haonan , Zhu Feng , Tian Xing, Guo Zhigang, Yang Jian, Wang Qiuwang, NUMERICAL INVESTIGATION OF HEAT TRANSFER ENHANCEMENT WITH DIMPLED PARTICLES IN STRUCTURED PACKED BEDS , Heat Transfer Research, 53, 17, 2022. Crossref

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