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Journal of Enhanced Heat Transfer

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ISSN Druckformat: 1065-5131

ISSN Online: 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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Numerical Investigation of Electronic Component Cooling Enhancement Using Nanofluids in a Radial Flow Cooling System

Volumen 13, Ausgabe 2, 2006, pp. 101-115
DOI: 10.1615/JEnhHeatTransf.v13.i2.20
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ABSTRAKT

This paper presents initial numerical investigation into the potential use of nanofluids in electronic equipment cooling devices. Continually increasing power densities per electronic device are requiring more innovative techniques of heat dissipation. The work presented in this paper investigates the heat transfer enhancement capabilities of coolants with suspended metallic nanoparticles (in this case, Al2O3 dispersed in water) inside a radial flow micro-electronic cooling device. Steady, laminar radial flow of a nanofluid in a simplified axisymmetric configuration with axial coolant injection has been considered. The 'single-phase fluid' approach was adopted in order to be able to study the thermal behaviors of nanofluids in this application. Results clearly indicate that considerable increases in heat removal capabilities are possible in radial flow cooling systems with the use of nanofluids. For example, for a nanoparticle volume fraction φ of 5%, increases of 30% in the average wall heat transfer coefficients for the water/Al2O3 nanofluid are found. In general, it was noted that local the heat transfer increases with φ and the Reynolds number and decreases with an increase in channel height (distance separating the impinging jet nozzle and the heated plate). Local heat transfer was also noted to change noticeably with the behavior of the hydrodynamic field (i.e., flow separation areas). Although considerable increases in heat transfer capabilities are found, associated increases in wall shear stresses are also noticed.

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