3 papers
astro-ph2001
A Continuum Description of Rarefied Gas Dynamics (II)--- The Propagation of Ultrasound
Xinzhong Chen, Hongling Rao, Edward A. Spiegel
The equations of fluid dynamics developed in paper I are applied to the study of the propagation of ultrasound waves. There is good agreement between the predicted propagation spee…
astro-ph2001
A Continuum Description of Rarefied Gas Dynamics (I)--- Derivation From Kinetic Theory
Xinzhong Chen, Hongling Rao, Edward A. Spiegel
We describe an asymptotic procedure for deriving continuum equations from the kinetic theory of a simple gas. As in the works of Hilbert, of Chapman and of Enskog, we expand in the…
astro-ph2001
Radiative Bulk Viscosity
X. Chen, E. A. Spiegel
Viscous resistance to changes in the volume of a gas arises when different degrees of freedom have different relaxation times. Collisions tend to oppose the resulting departures fr…