Averaging approach for microchannel heat sinks subject to the uniform wall temperature condition

Cited 39 time in webofscience Cited 39 time in scopus
  • Hit : 375
  • Download : 163
The present paper is devoted to modeling methods for thermal analysis of rnicrochannel heat sinks. The averaging approach presented in earlier works for the case of constant surface heat flux is extended to the problems subject to the uniform wall temperature condition. The solutions for velocity and temperature distributions are obtained by solving one-dimensional averaged governing equations without resorting to a two-dimensional direct numerical Simulation. General solutions for both high-aspect-ratio and low-aspect-ratio microchannel heat sinks are presented. Asymptotic Solutions in high-aspect-ratio and low-aspect-ratio limits are also given in explicit form. The solutions presented in the paper are validated by comparing them with the results of direct numerical simulation. The friction factors, Nusselt numbers and thermal resistances for microchannel heat sinks with a uniform base temperature are obtained from the presented Solutions. The effects of the aspect ratio and the porosity on the friction factor and the Nusselt number are presented. Finally, characteristics of the thermal resistance of the microchannel heat sink are discussed. (c) 2005 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2006-02
Language
English
Article Type
Article
Keywords

MICROSTRUCTURES; OPTIMIZATION; CONVECTION

Citation

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.49, no.3-4, pp.695 - 706

ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2005.08.012
URI
http://hdl.handle.net/10203/20645
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
000235817800019.pdf(486.86 kB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 39 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0