A photographic study of bubble coalescence

Yu Min Yang, Jer Ru Maa

Research output: Contribution to journalArticlepeer-review


The coalescence of nitrogen bubbles in liquid was studied by using a high-speed motion picture camera at speeds up to 3,000 frames per second. Examination of the films frame by frame reveals that the general process of bubble coalescence is growth-touching- coalescence-vibrating-detachment. A small amount of surface active additive influences the time of coalescence significantly: 0.9ppm of sodium lauryl sulfate (SLS), 1.6 ppm of sodium laury benzene sulfonate (SLBS) or 1.8 ppm of n-octanol inhibits the bubble coalescence completely. This phenomenon is attributed to the dynamic surface effect or the departure from static surface tension caused by extension of the gas-liquid interface.

Original languageEnglish
Pages (from-to)257-263
Number of pages7
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Issue number4
Publication statusPublished - 1983 Jan 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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