6533b7d0fe1ef96bd125aea1
RESEARCH PRODUCT
Thermodynamic pressure in nonlinear nonequilibrium thermodynamics of dilute nonviscous gases.
Maria Stella Mongiovìsubject
Physicssymbols.namesakeEntropy (classical thermodynamics)Nonlinear systemInternal energyFundamental thermodynamic relationHeat fluxGibbs–Helmholtz equationsymbolsThermodynamicsNon-equilibrium thermodynamicsThermal conductiondescription
In this paper, using extended thermodynamics, we build up a nonlinear theory for a dilute nonviscous gas under heat flux. The fundamental fields are the density, the velocity, the internal energy density, and the heat flux. The constitutive theory is builtup without approximations. We single out the nonlinear complete expressions of the Gibbs equation and of the nonequilibrium pressure. In particular, we determine the complete expressions furnished by the theory for the nonequilibrium pressure tensor and thermodynamic pressure, i.e., the derivative of the nonequilibrium internal specific entropy with respect to the specific volume, times the nonequilibrium temperature. In a second-order approximation these expressions are identical with those obtained in Phys. Rev. E 51, 158 (1995), using information theory.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-11-13 | Physical review. E, Statistical, nonlinear, and soft matter physics |