Micro-scale cavities in the slip - and transition - flow regimes

Simon Mizzi, David R. Emerson, Stefan K. Stefanov, Robert W. Barber, Jason M. Reese

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Abstract

Differences between Navier-Stokes-Fourier (NSF) slip/jump solutions and direct simulation Monte-Carlo (DSMC) computations are highlighted for a micro lid-driven cavity problem. The results indicate a need for better modelling techniques which at the same time retain low computational cost of NSF models. We also highlight the fact thatmany micro-flows that have been considered are simple planar flows and typical classification systems are defined on such flows. We show that for complex flows, such as thedriven cavity, non-equilibrium effects are more appreciable and their onset occurs at lower Knudsen numbers than expected.
Original languageEnglish
Number of pages10
Publication statusPublished - 2006
EventComputational Micro and Nanofluidics Conference (ECCOMAS CFD) - Egmond aan Zee, The Netherlands
Duration: 1 Sep 2006 → …

Conference

ConferenceComputational Micro and Nanofluidics Conference (ECCOMAS CFD)
CityEgmond aan Zee, The Netherlands
Period1/09/06 → …

Keywords

  • fluid dynamics
  • knudsen layer
  • nanofluidics
  • hydrodynamics

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