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Meccanica

, Volume 49, Issue 9, pp 2181–2187 | Cite as

On the six-field model of fluids based on extended thermodynamics

  • Takashi Arima
  • Tommaso Ruggeri
  • Masaru SugiyamaEmail author
  • Shigeru Taniguchi
New Trends in Fluid and Solid Mechanical Models

Abstract

We study the six-field model of fluids (ET6) derived from extended thermodynamics. The six fields are the mass density, the velocity, the temperature, and the dynamic pressure (nonequilibrium pressure). We present the basic system of field equations of ET6. And we elucidate its characteristic features through the studies of the singular limit from polyatomic to monatomic rarefied gases, of hydrodynamic fluctuation, and of a hard-sphere system. Open problems remained in ET6 at present are also pointed out.

Keywords

Six-field model of fluids Extended thermodynamics Dynamic pressure Singular limit Hydrodynamic fluctuation Hard-sphere system 

Notes

Acknowledgments

This work was partially supported by Japan Society of Promotion of Science (JSPS) No.~25390150 (M.S.) and No.~24760055 (S.T.) and by National Group of Mathematical Physics GNFM-INdAM (T.R.).

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Takashi Arima
    • 1
  • Tommaso Ruggeri
    • 2
  • Masaru Sugiyama
    • 3
    Email author
  • Shigeru Taniguchi
    • 3
  1. 1.Center for Social Contribution and CollaborationNagoya Institute of TechnologyNagoyaJapan
  2. 2.Department of Mathematics & Research Center of Applied Mathematics (CIRAM)University of BolognaBolognaItaly
  3. 3.Graduate School of EngineeringNagoya Institute of TechnologyNagoyaJapan

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