Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling

John F. Maddox; Roy W. Knight; Sushil H. Bhavnani

doi:10.1109/SEMI-THERM.2015.7100165

Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling

John F. Maddox, Roy W. Knight, Sushil H. Bhavnani

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

17 Scopus citations

Abstract

The local surface temperature, heat flux, heat transfer coefficient, and Nusselt number were measured for an inline array of circular normal jets of single phase liquid water impinging on a copper block. An experimental 2-D surface map was obtained by translating the jet array relative to the sensors. The effects of variation in jet height, nozzle length, and Reynolds number were investigated. The local maximum heat transfer coefficients were observed within the stagnation region for all configurations with secondary peaks occurring halfway between the jets. The maximum local heat transfer coefficient of 15,600W=m²K and local Nusselt number of 80.5 were observed for H/D_n = 1, L_n/D_n = 2, and Re_D_n = 14,000; while the maximum surface average heat transfer coefficient of 13,700W=m²K and average Nusselt number of 71.0 were observed for H/D_n = 3, L_n/D_n = 0, and Re_D_n = 14,000.

Original language	English
Title of host publication	31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - Proceedings
Pages	228-234
Number of pages	7
ISBN (Electronic)	9781479986002
DOIs	https://doi.org/10.1109/SEMI-THERM.2015.7100165
State	Published - Apr 30 2015
Event	31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - San Jose, United States Duration: Mar 15 2015 → Mar 19 2015

Publication series

Name	Annual IEEE Semiconductor Thermal Measurement and Management Symposium
Volume	2015-April
ISSN (Print)	1065-2221

Conference

Conference	31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015
Country/Territory	United States
City	San Jose
Period	3/15/15 → 3/19/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

automotive
confined jet
jet array
jet impingement cooling
liquid cooling
local heat flux
power electronics
submerged jet

ASJC Scopus subject areas

Instrumentation
Electrical and Electronic Engineering

Access to Document

10.1109/SEMI-THERM.2015.7100165

Cite this

Maddox, J. F., Knight, R. W., & Bhavnani, S. H. (2015). Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling. In 31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - Proceedings (pp. 228-234). Article 7100165 (Annual IEEE Semiconductor Thermal Measurement and Management Symposium; Vol. 2015-April). https://doi.org/10.1109/SEMI-THERM.2015.7100165

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title = "Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling",

abstract = "The local surface temperature, heat flux, heat transfer coefficient, and Nusselt number were measured for an inline array of circular normal jets of single phase liquid water impinging on a copper block. An experimental 2-D surface map was obtained by translating the jet array relative to the sensors. The effects of variation in jet height, nozzle length, and Reynolds number were investigated. The local maximum heat transfer coefficients were observed within the stagnation region for all configurations with secondary peaks occurring halfway between the jets. The maximum local heat transfer coefficient of 15,600W=m2K and local Nusselt number of 80.5 were observed for H/Dn = 1, Ln/Dn = 2, and ReDn = 14,000; while the maximum surface average heat transfer coefficient of 13,700W=m2K and average Nusselt number of 71.0 were observed for H/Dn = 3, Ln/Dn = 0, and ReDn = 14,000.",

keywords = "automotive, confined jet, jet array, jet impingement cooling, liquid cooling, local heat flux, power electronics, submerged jet",

author = "Maddox, {John F.} and Knight, {Roy W.} and Bhavnani, {Sushil H.}",

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Maddox, JF, Knight, RW & Bhavnani, SH 2015, Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling. in 31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - Proceedings., 7100165, Annual IEEE Semiconductor Thermal Measurement and Management Symposium, vol. 2015-April, pp. 228-234, 31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015, San Jose, United States, 3/15/15. https://doi.org/10.1109/SEMI-THERM.2015.7100165

Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling. / Maddox, John F.; Knight, Roy W.; Bhavnani, Sushil H.
31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - Proceedings. 2015. p. 228-234 7100165 (Annual IEEE Semiconductor Thermal Measurement and Management Symposium; Vol. 2015-April).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Knight, Roy W.

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N2 - The local surface temperature, heat flux, heat transfer coefficient, and Nusselt number were measured for an inline array of circular normal jets of single phase liquid water impinging on a copper block. An experimental 2-D surface map was obtained by translating the jet array relative to the sensors. The effects of variation in jet height, nozzle length, and Reynolds number were investigated. The local maximum heat transfer coefficients were observed within the stagnation region for all configurations with secondary peaks occurring halfway between the jets. The maximum local heat transfer coefficient of 15,600W=m2K and local Nusselt number of 80.5 were observed for H/Dn = 1, Ln/Dn = 2, and ReDn = 14,000; while the maximum surface average heat transfer coefficient of 13,700W=m2K and average Nusselt number of 71.0 were observed for H/Dn = 3, Ln/Dn = 0, and ReDn = 14,000.

AB - The local surface temperature, heat flux, heat transfer coefficient, and Nusselt number were measured for an inline array of circular normal jets of single phase liquid water impinging on a copper block. An experimental 2-D surface map was obtained by translating the jet array relative to the sensors. The effects of variation in jet height, nozzle length, and Reynolds number were investigated. The local maximum heat transfer coefficients were observed within the stagnation region for all configurations with secondary peaks occurring halfway between the jets. The maximum local heat transfer coefficient of 15,600W=m2K and local Nusselt number of 80.5 were observed for H/Dn = 1, Ln/Dn = 2, and ReDn = 14,000; while the maximum surface average heat transfer coefficient of 13,700W=m2K and average Nusselt number of 71.0 were observed for H/Dn = 3, Ln/Dn = 0, and ReDn = 14,000.

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BT - 31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - Proceedings

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Maddox JF, Knight RW, Bhavnani SH. Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling. In 31st Annual Semiconductor Thermal Measurement and Management Symposium, SEMI-THERM 2015 - Proceedings. 2015. p. 228-234. 7100165. (Annual IEEE Semiconductor Thermal Measurement and Management Symposium). doi: 10.1109/SEMI-THERM.2015.7100165

Local thermal measurements of a confined array of impinging liquid jets for power electronics cooling

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this