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

Chi-Chuan Hwang, C. I. Weng

Research output: Contribution to journalArticle

33 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

Fingerprint

Liquid films
liquids
kinematic equations
mass transfer
condensates
Film thickness
Kinematics
liquid phases
film thickness
disturbances
Mass transfer
Liquids

All Science Journal Classification (ASJC) codes

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

Cite this

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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.",
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Finite-amplitude stability analysis of liquid films down a vertical wall with and without interfacial phase change. / Hwang, Chi-Chuan; Weng, C. I.

In: International Journal of Multiphase Flow, Vol. 13, No. 6, 01.01.1987, p. 803-814.

Research output: Contribution to journalArticle

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