New directions in fluid dynamics: Non-equilibrium aerodynamic and microsystem flows

Jason M. Reese, Michael A. Gallis, Duncan A. Lockerby

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

Fluid flows that do not have local equilibrium are characteristic of some of the new frontiers in engineering and technology, for example, high-speed high-altitude aerodynamics and the development of micrometre-sized fluid pumps, turbines and other devices. However, this area of fluid dynamics is poorly understood from both the experimental and simulation perspectives, which hampers the progress of these technologies. This paper reviews some of the recent developments in experimental techniques and modelling methods for non-equilibrium gas flows, examining their advantages and drawbacks. We also present new results from our computational investigations into both hypersonic and microsystem flows using two distinct numerical methodologies: the direct simulation Monte Carlo method and extended hydrodynamics. While the direct simulation approach produces excellent results and is used widely, extended hydrodynamics is not as well developed but is a promising candidate for future more complex simulations. Finally, we discuss some of the other situations where these simulation methods could be usefully applied, and look to the future of numerical tools for non-equilibrium flows.
LanguageEnglish
Pages2967-2988
Number of pages21
JournalPhilosophical Transactions A: Mathematical, Physical and Engineering Sciences
Volume361
Issue number1813
DOIs
Publication statusPublished - 15 Dec 2003

Fingerprint

Microsystems
fluid dynamics
Fluid Dynamics
Fluid dynamics
aerodynamics
Aerodynamics
Non-equilibrium
Hydrodynamics
Turbine pumps
Simulation Methods
Hypersonic aerodynamics
Flow of gases
Flow of fluids
Direct Simulation Monte Carlo
Simulation
Local Equilibrium
Monte Carlo methods
simulation
Turbine
Gas Flow

Keywords

  • non-equilibrium flows
  • microfluidics
  • hypersonics
  • transition-continuum
  • direct simulation Monte Carlo
  • extended hydrodynamics

Cite this

Reese, Jason M. ; Gallis, Michael A. ; Lockerby, Duncan A. . / New directions in fluid dynamics : Non-equilibrium aerodynamic and microsystem flows. In: Philosophical Transactions A: Mathematical, Physical and Engineering Sciences. 2003 ; Vol. 361, No. 1813. pp. 2967-2988.
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New directions in fluid dynamics : Non-equilibrium aerodynamic and microsystem flows. / Reese, Jason M.; Gallis, Michael A.; Lockerby, Duncan A. .

In: Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, Vol. 361, No. 1813, 15.12.2003, p. 2967-2988.

Research output: Contribution to journalArticle

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