On the Induction Criterion of the Marangoni Convection at the Gas/Liquid Interface

Hsin Hsen Lu, Yu Min Yang, Jer Ru Maa

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Some spreading solutes were found to be effective in enhancing the absorption rate by provoking interfacial turbulence at the gas-liquid surface. In this work, the induction criterion Marangoni convection is explored experimentally and theoretically by using aqueous solutions of normal alcohols and surfactants as spreading liquids. The experimental results show that aqueous solutions of methanol, ethanol, n-propanol, n-butanol, and n-pentanol may induce significant interfacial turbulence, and, on the other hand, aqueous solutions of n-hexanol, n-octanol, SDS, DTMAC, and Triton X-100 do not provoke noticeable interfacial turbulence. A dimensionless Marangoni number, Ma, based on film thickness δ is satisfactorily developed to evaluate the potentiality of a spreading liquid to produce interfacial turbulence. The critical Marangoni number, Ma, c, for the occurrence of the Marangoni convection is also determined.

Original languageEnglish
Pages (from-to)474-482
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume36
Issue number2
DOIs
Publication statusPublished - 1997 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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