Deceleration of the entropy production

Details Deceleration of the entropy production Deceleration of the entropy production

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...224...86m&link_type=abstract

Astrophysical Journal, Part 1, vol. 224, Aug. 15, 1978, p. 86-93. Navy-supported research.

Astronomy and Astrophysics

Astrophysics

1

Entropy, Hydrodynamic Equations, Thermal Diffusion, Thermodynamic Equilibrium, Deceleration, Gas Viscosity, Ideal Gas, Kinetic Theory, Self Propagation, Thermal Conductivity, Variational Principles

Scientific paper

It is postulated that for an isolated stable system out of equilibrium, the total entropy production must decelerate. A variational principle is deduced. The thermal conductivity and viscosity of incompressible substances are deduced and found to agree with experiments. It is strongly argued that self-diffusion should be added to the hydrodynamical equations, and it is shown that the omission of self-diffusion will lead to experimental values of zeta (second viscosity) which are too large and erroneously dispersive. The value of zeta for an ideal gas is deduced and is shown to be nondispersive. For H2, O2, CO, and CO2, the theory predicts zeta approximately equal to 1/5 eta, where eta is the first viscosity.

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