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

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

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

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

Mechanical And Aerospace Engineering

Research output: Contribution to conference › Paper › peer-review

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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 language	English
Number of pages	10
Publication status	Published - 2006
Event	Computational Micro and Nanofluidics Conference (ECCOMAS CFD) - Egmond aan Zee, The Netherlands Duration: 1 Sept 2006 → …

Conference

Conference	Computational Micro and Nanofluidics Conference (ECCOMAS CFD)
City	Egmond aan Zee, The Netherlands
Period	1/09/06 → …

Keywords

fluid dynamics
knudsen layer
nanofluidics
hydrodynamics

Access to Document

strathprints006684Accepted author manuscript, 3.15 MB

Fluid Flow and Heat Transfer in Gas Microsystems
Reese, J. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/01/04 → 30/09/07
Project: Research

Cite this

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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.",

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T1 - Micro-scale cavities in the slip - and transition - flow regimes

AU - Mizzi, Simon

AU - Emerson, David R.

AU - Stefanov, Stefan K.

AU - Barber, Robert W.

AU - Reese, Jason M.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - fluid dynamics

KW - knudsen layer

KW - nanofluidics

KW - hydrodynamics

M3 - Paper

T2 - Computational Micro and Nanofluidics Conference (ECCOMAS CFD)

Y2 - 1 September 2006

ER -

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

Abstract

Conference

Keywords

Access to Document

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Projects

Fluid Flow and Heat Transfer in Gas Microsystems

Cite this