Liquid Jet Impingement with an Angled Confining Wall for Spent Flow Management for Power Electronics Cooling with Local Thermal Measurements

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

Research output: Contribution to journalArticlepeer-review

14 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 with a common outlet for spent flow, and an experimental two-dimensional (2D) surface map was obtained by translating the jet array relative to the sensors. The effects of variation in jet height, jet pitch, confining wall angle, and average jet Reynolds number were investigated. A strong interaction between the effects of the geometric parameters was observed, and a 5 deg confining wall was seen to be an effective method of managing the spent flow for jet impingement cooling of power electronics. The maximum average heat transfer coefficient of 13,100 W/m2 K and average Nusselt number of 67.7 were measured at an average jet Reynolds number of 14,000.

Original languageEnglish
Article number31015
JournalJournal of Electronic Packaging, Transactions of the ASME
Volume137
Issue number3
DOIs
StatePublished - Sep 1 2015

Bibliographical note

Publisher Copyright:
Copyright © 2015 by ASME.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Computer Science Applications
  • Electrical and Electronic Engineering

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