Phase transition induced hydrodynamic instability

K. K. Loh, A. Saxena, T. Lookman, A. Parikh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Instabilides leading to oscillations in some particular properties of a system are intimately related to pattern formation. Nontrivial patterns form spontaneously as a result of the occurrence and propagation of the fronts of instability. These spontaneous patterns can be turned into functional structures at the corresponding length scale when the pattern forming processes are properly designed and controlled. In this work, we propose a scenario for mass transfer instability in a one-dimensional flow of a one-component fluid near its discontinuous liquid-gas phase transition. Instability leading to density oscillations occurs when the system fails to support steady-state flow due to the absence of mechanically stable uniform state as a consequence of a discontinuous transition. The system is modeled and simulated as a one-dimensional flow of a fluid for which the pressure tensor is derived from the equation of state of an inhomogeneous van der Waals fluid. Oscillations in fluid density occur at some appropriately tuned sets of parameters. The phenomenon may play a role in the formation of nanoscopic channel during an unstable Langmuir-Blodgett transfer reported in recent experiments and can be useful in patterning thin films.

Original languageEnglish (US)
Title of host publication2002 International Conference on Computational Nanoscience and Nanotechnology - ICCN 2002
EditorsM. Laudon, B. Romanowicz
Pages409-410
Number of pages2
StatePublished - 2002
Event2002 International Conference on Computational Nanoscience and Nanotechnology - ICCN 2002 - San Juan, Puerto Rico
Duration: Apr 21 2002Apr 25 2002

Other

Other2002 International Conference on Computational Nanoscience and Nanotechnology - ICCN 2002
CountryPuerto Rico
CitySan Juan
Period4/21/024/25/02

Keywords

  • Induced hydrodynamic instability
  • Phase transition

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Loh, K. K., Saxena, A., Lookman, T., & Parikh, A. (2002). Phase transition induced hydrodynamic instability. In M. Laudon, & B. Romanowicz (Eds.), 2002 International Conference on Computational Nanoscience and Nanotechnology - ICCN 2002 (pp. 409-410)