EXPERIMENTAL STUDY ON HEAT TRANSFER ENHANCEMENT OF AIR JET IMPINGEMENT FOR ELECTRONICS THERMAL MANAGEMENT
Fu, Jiahong LU ; Li, Yong LU
; Cao, Zhen
LU
and Sundén, Bengt
LU
(2022)
In Journal of Enhanced Heat Transfer
29(4).
p.63-80
- Abstract
Jet impingement cooling was investigated on a flat heating surface placed in a flow channel, including single jet cooling, in-line double jet cooling, and combined crossflow and jet cooling; cross-flow cooling was a baseline for comparison. In addition, the in-line double jet cooling was explored with various jet distances. Local Nusselt number distribution was experimentally achieved by the liquid crystal method, and the measurements were carried out under various jet pressures ranging from 1 bar to 4 bar. It was found that heat transfer depends on the jet distance because one jet may produce a crossflow effect on the other jet, affecting the formation of longitudinal vortices which could enhance heat transfer. It was seen that in... (More)
Jet impingement cooling was investigated on a flat heating surface placed in a flow channel, including single jet cooling, in-line double jet cooling, and combined crossflow and jet cooling; cross-flow cooling was a baseline for comparison. In addition, the in-line double jet cooling was explored with various jet distances. Local Nusselt number distribution was experimentally achieved by the liquid crystal method, and the measurements were carried out under various jet pressures ranging from 1 bar to 4 bar. It was found that heat transfer depends on the jet distance because one jet may produce a crossflow effect on the other jet, affecting the formation of longitudinal vortices which could enhance heat transfer. It was seen that in comparison to the crossflow cooling, the average Nusselt number is enhanced by 110%, 150%, and 380%by the single jet cooling, the in-line double jet cooling, and the combined cooling, respectively, and correspondingly the maximum Nusselt number is enhanced by 160%, 240%, and 540%, respectively. In the combined cooling, there is a deflection distance ranging from 0 mm to 10 mm depending on the jet pressure.
(Less)
- author
- Fu, Jiahong
LU
; Li, Yong
LU
; Cao, Zhen
LU
and Sundén, Bengt
LU
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- electronics cooling, enhanced heat transfer, jet impingement, liquid crystal thermography, thermal management
- in
- Journal of Enhanced Heat Transfer
- volume
- 29
- issue
- 4
- pages
- 18 pages
- publisher
- Begell House
- external identifiers
-
- scopus:85135776922
- ISSN
- 1065-5131
- DOI
- 10.1615/JEnhHeatTransf.2022041662
- language
- English
- LU publication?
- yes
- id
- 0056c07d-c5d8-4a17-a603-2b6850d29405
- date added to LUP
- 2022-09-19 11:18:32
- date last changed
- 2023-11-21 07:59:33
@article{0056c07d-c5d8-4a17-a603-2b6850d29405,
abstract = {{<p>Jet impingement cooling was investigated on a flat heating surface placed in a flow channel, including single jet cooling, in-line double jet cooling, and combined crossflow and jet cooling; cross-flow cooling was a baseline for comparison. In addition, the in-line double jet cooling was explored with various jet distances. Local Nusselt number distribution was experimentally achieved by the liquid crystal method, and the measurements were carried out under various jet pressures ranging from 1 bar to 4 bar. It was found that heat transfer depends on the jet distance because one jet may produce a crossflow effect on the other jet, affecting the formation of longitudinal vortices which could enhance heat transfer. It was seen that in comparison to the crossflow cooling, the average Nusselt number is enhanced by 110%, 150%, and 380%by the single jet cooling, the in-line double jet cooling, and the combined cooling, respectively, and correspondingly the maximum Nusselt number is enhanced by 160%, 240%, and 540%, respectively. In the combined cooling, there is a deflection distance ranging from 0 mm to 10 mm depending on the jet pressure. </p>}},
author = {{Fu, Jiahong and Li, Yong and Cao, Zhen and Sundén, Bengt}},
issn = {{1065-5131}},
keywords = {{electronics cooling; enhanced heat transfer; jet impingement; liquid crystal thermography; thermal management}},
language = {{eng}},
number = {{4}},
pages = {{63--80}},
publisher = {{Begell House}},
series = {{Journal of Enhanced Heat Transfer}},
title = {{EXPERIMENTAL STUDY ON HEAT TRANSFER ENHANCEMENT OF AIR JET IMPINGEMENT FOR ELECTRONICS THERMAL MANAGEMENT}},
url = {{http://dx.doi.org/10.1615/JEnhHeatTransf.2022041662}},
doi = {{10.1615/JEnhHeatTransf.2022041662}},
volume = {{29}},
year = {{2022}},
}