Piezothermal effect in a spinning gas

Journal Article · 12 October 2016 · Physical Review E

DOI: https://doi.org/10.1103/PhysRevE.94.042113 · OSTI ID:1332298

Geyko, V. I. ^[1]; Fisch, N. J.  ^[1]

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1. Princeton Univ., Princeton, NJ (United States)

A spinning gas, heated adiabatically through axial compression, is known to exhibit a rotation-dependent heat capacity. However, as equilibrium is approached, an 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 piezothermal effect, is shown to grow bilinearly with the compression rate and the amplitude of the potential. As a result, numerical simulations confirm a simple model of this effect, which can be generalized to other forms of potential energy and methods of heating.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC02-09CH11466; NA0002948
• OSTI ID: 1332298
• Journal Information: Physical Review E, Journal Name: Physical Review E Journal Issue: 4 Vol. 94; ISSN PLEEE8; ISSN 2470-0045
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English