Microgravity - Science and Technology

, Volume 18, Issue 3–4, pp 204–209 | Cite as

Lateral motion and interaction of gas bubbles growing over spherical and plate heaters

  • Nikolaos Divinis
  • Thodoris D. Karapantsios
  • Margaritis Kostoglou
  • Vasilis Bontozoglou
  • Robert de Bruijn
  • J. C. Legros


This work investigates the motion of CO2 bubbles emerging in n-heptane when a heat pulse given to a submerged heater creates local supersaturation. The ensuing slow diffusion-induced bubble expansion makes bubble motion easy to observe. The low gravity environment of a parabolic flight allows bubbles to reach large sizes without departing from the heater while retaining their spherical shape. A fast lateral displacement of single bubbles has often been noticed on two type of heaters. In cases where many bubbles grow adjacent to each other, they soon start to interact. Phenomena such as bubbles clustering, coalescence and lift-off from the heater of a large bubble induced by neighboring small ones, have been repeatedly observed. An interesting thermocapillary attraction has also been noticed between bubbles adhering to the heater and others free-floating in the nearby liquid.


Large Bubble Heat Pulse Microgravity Condition Plate Heater Parabolic Flight 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Z-Tec Publishing 2006

Authors and Affiliations

  • Nikolaos Divinis
    • 1
  • Thodoris D. Karapantsios
    • 1
  • Margaritis Kostoglou
    • 1
  • Vasilis Bontozoglou
    • 2
  • Robert de Bruijn
    • 3
  • J. C. Legros
    • 4
  1. 1.Dept. of Chemistry, Division of Chem TechnologyAristotle UniversityThessalonikiGreece
  2. 2.Dept. of Mechanical and Industrial EngineeringUniversity of Thessaly, Pedion AreosVolosGreece
  3. 3.Van der Waals-Zeeman InstituutUniversiteit van AmsterdamAmsterdamThe Netherland
  4. 4.Service de chimie-physiqueUniv. Libre de BruxellesBrusselsBelgium

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