Advanced

Forced convection and heat transfer of water-cooled microchannel heat sinks with various structured metal foams

Shen, Beibei; Yan, Hongbin; Sunden, Bengt LU ; Xue, Hongqian and Xie, Gongnan LU (2017) In International Journal of Heat and Mass Transfer 113. p.1043-1053
Abstract

The excellent performance of metal foams is well-recognized in the thermal and energy fields. This paper presents an investigation on the convective heat transfer and thermal performance of microchannel heat sinks with different structures of metal foams, such as Y-shaped, metal foam attached to fins, combined metal foams. The inlet Reynolds number is ranging from 170 to 554 and the porosity of the metal foam is ranging from 0.7 to 0.9. The detailed thermal performance and flow characteristics are presented and analyzed by using computational fluid dynamics with a verified computational model. The influences of flow velocity and porosity of the metal foam on the flow and heat transfer characteristics in a microchannel are also observed.... (More)

The excellent performance of metal foams is well-recognized in the thermal and energy fields. This paper presents an investigation on the convective heat transfer and thermal performance of microchannel heat sinks with different structures of metal foams, such as Y-shaped, metal foam attached to fins, combined metal foams. The inlet Reynolds number is ranging from 170 to 554 and the porosity of the metal foam is ranging from 0.7 to 0.9. The detailed thermal performance and flow characteristics are presented and analyzed by using computational fluid dynamics with a verified computational model. The influences of flow velocity and porosity of the metal foam on the flow and heat transfer characteristics in a microchannel are also observed. It is found that different configurations and locations of metal foam in microchannel result in different heat transfer characteristics. The microchannel heat sinks with combined metal foams have better overall thermal performance than the other two models because it possesses the advantages of mixing fluid flow caused by Y-shaped metal foam and contacting the fins closely. Therefore, properly designed configurations of metal foams can further enhance the microchannel heat sink cooling capacity. Besides, the porosities have a small effect on the thermal performance but have a larger effect on the pressure drop.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Metal foam, Microchannel heat sink, Pressure drop, Thermal resistance, Topology effect
in
International Journal of Heat and Mass Transfer
volume
113
pages
11 pages
publisher
Pergamon
external identifiers
  • scopus:85020709652
  • wos:000406731300091
ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2017.06.004
language
English
LU publication?
yes
id
bed4e6ce-3803-4362-8f1d-419c59f24470
date added to LUP
2017-07-04 07:41:20
date last changed
2017-09-18 11:37:31
@article{bed4e6ce-3803-4362-8f1d-419c59f24470,
  abstract     = {<p>The excellent performance of metal foams is well-recognized in the thermal and energy fields. This paper presents an investigation on the convective heat transfer and thermal performance of microchannel heat sinks with different structures of metal foams, such as Y-shaped, metal foam attached to fins, combined metal foams. The inlet Reynolds number is ranging from 170 to 554 and the porosity of the metal foam is ranging from 0.7 to 0.9. The detailed thermal performance and flow characteristics are presented and analyzed by using computational fluid dynamics with a verified computational model. The influences of flow velocity and porosity of the metal foam on the flow and heat transfer characteristics in a microchannel are also observed. It is found that different configurations and locations of metal foam in microchannel result in different heat transfer characteristics. The microchannel heat sinks with combined metal foams have better overall thermal performance than the other two models because it possesses the advantages of mixing fluid flow caused by Y-shaped metal foam and contacting the fins closely. Therefore, properly designed configurations of metal foams can further enhance the microchannel heat sink cooling capacity. Besides, the porosities have a small effect on the thermal performance but have a larger effect on the pressure drop.</p>},
  author       = {Shen, Beibei and Yan, Hongbin and Sunden, Bengt and Xue, Hongqian and Xie, Gongnan},
  issn         = {0017-9310},
  keyword      = {Metal foam,Microchannel heat sink,Pressure drop,Thermal resistance,Topology effect},
  language     = {eng},
  month        = {10},
  pages        = {1043--1053},
  publisher    = {Pergamon},
  series       = {International Journal of Heat and Mass Transfer},
  title        = {Forced convection and heat transfer of water-cooled microchannel heat sinks with various structured metal foams},
  url          = {http://dx.doi.org/10.1016/j.ijheatmasstransfer.2017.06.004},
  volume       = {113},
  year         = {2017},
}