Experimental study on bubble dynamics at the outlet of capillary tube in the flowing liquid

Yong Shi, Li Jiong Bao, Xun Zhu, Qiang Liao

Research output: Journal PublicationArticlepeer-review

Abstract

In this paper, visualization experiments were carried out to study bubble dynamics at the outlet of capillary tube in the flowing liquid. We discussed the influence of the wettability of tube wall, liquid velocity and gas flux on the growth and departure of bubbles. Our results show that due to the shear stress' effect, a larger liquid speed results in the bubbles with a shorter departure time and a smaller departure diameter. Meanwhile, a larger gas flux accelerates the bubble's growth and shortens its departure time. In addition, our experiment also reveals that the change of the wettablity of tube wall causes the contact line to move in the radial direction.

Original languageEnglish
Pages (from-to)1541-1544
Number of pages4
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume29
Issue number9
Publication statusPublished - Sep 2008
Externally publishedYes

Keywords

  • Capillary tube
  • Growth and departure characteristics of bubbles
  • Visualization experiment

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanical Engineering

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