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Journal of Enhanced Heat Transfer

Publicado 8 números por año

ISSN Imprimir: 1065-5131

ISSN En Línea: 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 ON EFFECTS OF SECONDARY FLOW INTO DUCT FOR COOLING OF THE RIBS BY PASSIVE ENHANCEMENT METHOD

Volumen 19, Edición 3, 2012, pp. 233-248
DOI: 10.1615/JEnhHeatTransf.2012001480
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SINOPSIS

A numerical investigation of hydrodynamic and forced convection heat transfer in a three-dimensional rectangular horizontal duct was conducted. Heat sources were cross-rectangular ribs with small aspect ratio and uniform heat flux a under turbulent regime. The purpose of this study is application of a passive enhancement method to increase the rate of heat transfer from the ribs. The geometry and physics of the problem are similar to cooling of electronic boards. Therefore three rectangular ribs were established along the width of the channel with specified distance from each other. Between ribs some vortexes appeared, which generally acted as heat traps and thus reduced the heat-transfer rate. These thermal resistances should be neutralized by applying heat-transfer enhancement methods. Due to the low pressure of these areas in comparison with their surrounding environment, establishing holes between the ribs is an appropriate method for vanishing the heat traps. Actually, by applying holes between the ribs, some distortions in the vortex patterns are made and an enhancement in the heat transfer due to the existence of secondary flows are made subsequently. These phenomena occurred without any outsource energies. This method is classified as a passive method. Numerical simulation for the assumed geometry is performed by solving the governing equations infinite volume with PHOENICS software. The obtained simulated results indicate good agreement with experimental investigations reported by other researchers. In this work, the main airflow was produced in two cases of suction and blowing from a fan inside of the channel. A comparison between two cases of suction and blowing is different for pressure gradients. Different pressure gradients have been affected on heat transfer phenomenon. Comparisons between the plain and passive cases show that the performance evaluation criterion is highly dependant on the holes' geometric parameters, especially their numbers and arrangements. Nine different arrangements for holes with the same number of holes were studied comprehensively in this research.

CITADO POR
  1. Alami nia Amin, Campo Antonio, Experimental study on EHD heat transfer enhancement from flush-mounted ribbons with different arrangements of wire electrodes in a channel, Heat and Mass Transfer, 52, 12, 2016. Crossref

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