Non-equilibrium piezo-thermal effect in spinning gas
Statistical Mechanics
2016-10-19 v1 Soft Condensed Matter
Fluid Dynamics
Abstract
A spinning gas, heated adiabatically through axial compression, is known to exhibit a rotation-dependent heat capacity. However, as equilibrium is approached, a new effect is identified here wherein the temperature does not grow homogeneously in the radial direction, but develops a temperature differential with the hottest region on axis, at the maximum of the centrifugal potential energy. This phenomenon, which we call a piezo-thermal effect, is shown to grow bilinearly with the compression rate and the amplitude of the potential. Numerical simulations confirm a simple model of this effect, which can be generalized to other forms of potential energy and methods of heating.
Cite
@article{arxiv.1604.00063,
title = {Non-equilibrium piezo-thermal effect in spinning gas},
author = {V. I. Geyko and N. J. Fisch},
journal= {arXiv preprint arXiv:1604.00063},
year = {2016}
}