Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2009-07-03
Phys. Rev. Lett. 104, 028001 (2010)
Physics
Condensed Matter
Soft Condensed Matter
4 pages, 4 figures; v2: Title change, MD simulation data added; v3: Slightly shortened to fit 4-page limit
Scientific paper
10.1103/PhysRevLett.104.028001
We describe a special class of steady Couette flows in dilute granular gases admitting a non-Newtonian hydrodynamic description for strong dissipation. The class occurs when viscous heating exactly balances inelastic cooling, resulting in a uniform heat flux. It includes the Fourier flow of ordinary gases and the simple or uniform shear flow (USF) of granular gases as special cases. The rheological functions have the same values as in the USF and generalized thermal conductivity coefficients can be identified. These points are confirmed by molecular dynamics simulations, Monte Carlo simulations of the Boltzmann equation, and analytical results from Grad's 13-moment method.
Garzo Vicente
Reyes Francisco Vega
Santos Andrés
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