Bubble enhanced heat transfer from a vertical heated surface

Brian Donnelly, Tadhg S. O'Donovan, Darina B. Murray

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A rising bubble in a liquid can greatly enhance heat transfer from heated surfaces by acting like a bluff body, displacing fluid as it moves and via the wake generated by the bubble, increasing the mixing of the liquid. The current research quantifies the effect a single free rising ellipsoidal air bubble has on heat transfer from a vertical heated block immersed in water. By measuring the time varying heat transfer and tracking the bubble dynamics, further understanding of the heat transfer mechanism is achieved. Both the plane in which the bubble oscillates and the proximity of the bubble path are shown to influence the surface heat transfer. © 2008 by Begell House, Inc.

Original languageEnglish
Pages (from-to)159-169
Number of pages11
JournalJournal of Enhanced Heat Transfer
Volume15
Issue number2
DOIs
Publication statusPublished - 2008

Keywords

  • Bubble
  • Buoyancy-driven
  • Heat transfer
  • High-speed photography
  • Synchronized

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