0

Full Content is available to subscribers

Subscribe/Learn More  >

Stability of Thin Free Liquid Films and the Onset Conditions for Film Rupture: A MD Simulation Study

[+] Author Affiliations
Yu Gan, Van P. Carey

University of California - Berkeley, Berkeley, CA

Paper No. HT2007-32003, pp. 653-660; 8 pages
doi:10.1115/HT2007-32003
From:
  • ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference
  • ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 3
  • Vancouver, British Columbia, Canada, July 8–12, 2007
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4276-2 | eISBN: 0-7918-3801-3

abstract

Free liquid films bounded on two sides by vapor are of particular interest in nucleate boiling process because the merging of bubbles is ultimately associated with the rupture of a liquid film separating the vapor inside the bubbles. The stability and conditions for the free film rupture are therefore of central importance to the merging process because they dictate whether coalescence is likely to occur. Most previous studies of free film stability have focused on a continuum model of wave phenomena at the interfaces of the film. In the investigation summarized here, molecular dynamics (MD) simulation was used to explore the stability of free films of liquid argon surrounded by saturated argon vapor. The MD simulations predict that the wave perturbation or density fluctuation induced by the thermodynamic intrinsic instability can lead to rupture of the liquid film, as its thickness decreases below a critical value. It further predicts that the critical film thickness derived from density fluctuation increases with system temperature. These predictions were also compared with those of conventional interface wave perturbation analysis. The result of this investigation suggests that during bubble merging, thermodynamic instability of the liquid phase may play a role in the onset of film rupture as the liquid film separating the bubbles gets progressively thinner.

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In