Numerical investigation of fluid flow and heat transfer under high heat flux using rectangular micro-channels

Handle URI:
http://hdl.handle.net/10754/562080
Title:
Numerical investigation of fluid flow and heat transfer under high heat flux using rectangular micro-channels
Authors:
Mansoor, Mohammad M. ( 0000-0001-9196-0960 ) ; Wong, Kokcheong; Siddique, Mansoor M.
Abstract:
A 3D-conjugate numerical investigation was conducted to predict heat transfer characteristics in a rectangular cross-sectional micro-channel employing simultaneously developing single-phase flows. The numerical code was validated by comparison with previous experimental and numerical results for the same micro-channel dimensions and classical correlations based on conventional sized channels. High heat fluxes up to 130W/cm 2 were applied to investigate micro-channel thermal characteristics. The entire computational domain was discretized using a 120×160×100 grid for the micro-channel with an aspect ratio of (α=4.56) and examined for Reynolds numbers in the laminar range (Re 500-2000) using FLUENT. De-ionized water served as the cooling fluid while the micro-channel substrate used was made of copper. Validation results were found to be in good agreement with previous experimental and numerical data [1] with an average deviation of less than 4.2%. As the applied heat flux increased, an increase in heat transfer coefficient values was observed. Also, the Reynolds number required for transition from single-phase fluid to two-phase was found to increase. A correlation is proposed for the results of average Nusselt numbers for the heat transfer characteristics in micro-channels with simultaneously developing, single-phase flows. © 2011 Elsevier Ltd.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program
Publisher:
Elsevier
Journal:
International Communications in Heat and Mass Transfer
Issue Date:
Feb-2012
DOI:
10.1016/j.icheatmasstransfer.2011.12.002
Type:
Article
ISSN:
07351933
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMansoor, Mohammad M.en
dc.contributor.authorWong, Kokcheongen
dc.contributor.authorSiddique, Mansoor M.en
dc.date.accessioned2015-08-03T09:44:20Zen
dc.date.available2015-08-03T09:44:20Zen
dc.date.issued2012-02en
dc.identifier.issn07351933en
dc.identifier.doi10.1016/j.icheatmasstransfer.2011.12.002en
dc.identifier.urihttp://hdl.handle.net/10754/562080en
dc.description.abstractA 3D-conjugate numerical investigation was conducted to predict heat transfer characteristics in a rectangular cross-sectional micro-channel employing simultaneously developing single-phase flows. The numerical code was validated by comparison with previous experimental and numerical results for the same micro-channel dimensions and classical correlations based on conventional sized channels. High heat fluxes up to 130W/cm 2 were applied to investigate micro-channel thermal characteristics. The entire computational domain was discretized using a 120×160×100 grid for the micro-channel with an aspect ratio of (α=4.56) and examined for Reynolds numbers in the laminar range (Re 500-2000) using FLUENT. De-ionized water served as the cooling fluid while the micro-channel substrate used was made of copper. Validation results were found to be in good agreement with previous experimental and numerical data [1] with an average deviation of less than 4.2%. As the applied heat flux increased, an increase in heat transfer coefficient values was observed. Also, the Reynolds number required for transition from single-phase fluid to two-phase was found to increase. A correlation is proposed for the results of average Nusselt numbers for the heat transfer characteristics in micro-channels with simultaneously developing, single-phase flows. © 2011 Elsevier Ltd.en
dc.publisherElsevieren
dc.subjectHigh heat fluxen
dc.subjectMicro-channelen
dc.subjectSimultaneously developingen
dc.titleNumerical investigation of fluid flow and heat transfer under high heat flux using rectangular micro-channelsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.identifier.journalInternational Communications in Heat and Mass Transferen
dc.contributor.institutionFaculty of Engineering, University of Nottingham Malaysia, Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysiaen
dc.contributor.institutionDepartment of Thermal Engineering and Desalination Technology, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabiaen
kaust.authorMansoor, Mohammad M.en
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