Direct simulation of condensation in a one-dimensional unsteady expansion: Microscopic mechanisms

Jiaqiang Zhong, Michael I. Zeifman, Deborah A. Levin

Research output: Contribution to journalArticle

Abstract

We apply a molecular dynamics (MD) technique to the simulation of a quasi-one-dimensional unsteady free expansion to determine the dominant microscopic mechanisms of condensation in supersonic flows. In this way, it is possible to reproduce the basic physics of the coupled condensation flow with a moderate computational effort. The MD results confirm that the fundamental mechanism for the initiation of condensation is through dimer formation in two-stage ternary collisions of monomers.

Original languageEnglish (US)
Article number128102
Pages (from-to)1-4
Number of pages4
JournalPhysics of fluids
Volume17
Issue number12
DOIs
StatePublished - Dec 2005
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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