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Numerical investigation of flow boiling in double-layer microchannel heat sink

Ahmed, Shugata and Seder, Islam M.F. and Ab. Manaf, Hazli and Ahmed, Mirghani Ishak and Hawlader, Mohammad Nurul Alam (2014) Numerical investigation of flow boiling in double-layer microchannel heat sink. Australian Journal of Basic and Applied Sciences, 8 (15 ). pp. 18-24. ISSN 1991-8178

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Abstract

Double-layer microchannel heat sinks (DL-MCHS) are considered as an effective solution of temperature non-uniformity on the surface of microelectronic devices. However, only single-phase flow is analyzed so far in DL-MCHS. In this paper, numerical investigation has been carried out to observe the flow boiling phenomena in DL-MCHS. FLUENT ver. 14.5 has been used to simulate the multiphase flow in this particular heat sink. A mathematical model of the system has been provided. From the results, it is observed that two-phase heat transfer coefficient increases with increasing heat flux and decreases after achieving critical heat flux (CHF). For the considered channel, CHF is found to be550×〖10〗^4 Wm^(-2).Highest heat transfer rate during boiling is 6.4 W.

Item Type: Article (Journal)
Additional Information: 2426/39310
Uncontrolled Keywords: Double-layer microchannel, Flow boiling, Two-phase heat transfer coefficient
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ170 Mechanics applied to machinery. Dynamics
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: professor mirghani ishag ahmed
Date Deposited: 25 Nov 2014 06:46
Last Modified: 07 Feb 2017 07:15
URI: http://irep.iium.edu.my/id/eprint/39310

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