Finite-amplitude stability analysis of liquid films down a vertical wall with and without interfacial phase change

C. C. Hwang, C. I. Weng

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

The generalized kinematic equation for film thickness, taking into account the effect of phase change at the interface, is used to investigate the nonlinear stability of film flow down a vertical wall. The analysis shows that supercritical stability and subcritical instability are both possible for the film flow system. Applications of the result to isothermal, condensate and evaporate film flow show that mass transfer into (away from) the liquid phase will stabilize (destabilize) the film flow. Finally, we find that supercritical filtered waves are always linearly stable with regard to side-band disturbance.

Original languageEnglish
Pages (from-to)803-814
Number of pages12
JournalInternational Journal of Multiphase Flow
Volume13
Issue number6
DOIs
Publication statusPublished - 1987 Jan 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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