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Abstract
Predicting sound wave dispersion in monatomic gases is a fundamental gas flow problem in rarefied gas dynamics. The Navier-Stokes-Fourier model is known to fail where local thermodynamic equilibrium breaks down. Generally, conventional gas flow models involve equations for mass-density without a dissipative mass contribution. In this paper we observe that using a dissipative mass flux contribution as a non-local-equilibrium correction can improve agreement between the continuum equation prediction of sound wave dispersion and experimental data. Two mass dissipation models are investigated: a preliminary model that simply incorporates a diffusive density term in the set of three conservation equations, and another model derived from considering microscopic fluctuations in molecular spatial distributions.
Original language | English |
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Title of host publication | Rarefied gas dynamics |
Editors | D.A Levin, I.J Wysong, A.L Garcia, H Abarbanel |
Publisher | Springer |
Pages | 655-660 |
Number of pages | 5 |
Volume | 1333 |
Edition | 1st |
ISBN (Print) | 9780735408890 |
Publication status | Published - 28 Jun 2011 |
Publication series
Name | AIP Conference Proceedings |
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Publisher | Springer |
Volume | 1333 |
ISSN (Print) | 0094-243X |
Keywords
- sound wave propagation
- non-equilibrium gas dynamics
- mass diffusion
- gas kinetic theory
- continuum fluid mechanics
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Dive into the research topics of 'Dissipative mass flux and sound wave propagations in monatomic gases'. Together they form a unique fingerprint.Projects
- 1 Finished
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BEYOND NAVIER-STOKES: MEETING THE CHALLENGE OF NON-EQUILIBRIUM GAS DYNAMICS
Reese, J. (Principal Investigator) & McInnes, C. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/10/05 → 31/01/10
Project: Research