Experiments in Fluids

, Volume 50, Issue 6, pp 1527–1538

Lagrangian tracking of bubbles interacting with pin-fins in a microchannel

  • Markus Honkanen
  • Daren Elcock
  • Chih-Jung Kuo
  • Yoav Peles
  • Michael Amitay
Research Article

Abstract

This paper presents new image analysis algorithms to measure the trajectories of breaking and coalescing bubbles in microscale bubbly flows. Image analysis of high-speed movies provides information on bubble dynamics and bubble interaction including bubble coalescence and breakage events. Individual bubbles that overlap in the image are recognized with a presented breakline method. The breakline method discriminates the overlapping bubbles with lines based on the bubble perimeter curvature analysis. Coalescence and breakage events are automatically recognized, and the path lines of bubbles travelling through the field of view are analyzed. The functionality of the algorithms was examined in bubbly flow in a microchannel encompassing two pin-fins in tandem.

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Markus Honkanen
    • 1
  • Daren Elcock
    • 2
  • Chih-Jung Kuo
    • 2
  • Yoav Peles
    • 2
  • Michael Amitay
    • 2
  1. 1.Department of Energy and Process EngineeringTampere University of TechnologyTampereFinland
  2. 2.Department of Mechanical, Aerospace and Nuclear EngineeringRensselaer Polytechnic InstituteTroyUSA

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