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Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

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Piezothermal effect in a spinning gas.

V I Geyko¹, N J Fisch¹

¹Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA.

Physical Review. E

|November 15, 2016

Summary

Adiabatic axial compression of spinning gas causes a radial temperature differential, with the hottest region on axis. This piezothermal effect scales with compression rate and potential amplitude, confirmed by simulations.

Area of Science:

Thermodynamics
Fluid Dynamics
Plasma Physics

Background:

Spinning gases heated adiabatically via axial compression display rotation-dependent heat capacity.
Understanding temperature distribution in compressed rotating fluids is crucial for astrophysical and industrial applications.

Purpose of the Study:

To identify and characterize a novel temperature distribution phenomenon in adiabatically compressed spinning gases.
To investigate the relationship between compression rate, potential energy, and temperature gradients.

Main Methods:

Theoretical analysis of adiabatic heating in rotating systems.
Development of a simple model for the observed temperature differential.
Numerical simulations to validate the theoretical model and phenomenon.

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Main Results:

A temperature differential develops radially, with the highest temperature on the central axis.
This piezothermal effect exhibits a bilinear dependence on compression rate and potential energy amplitude.
Numerical simulations confirm the existence and behavior of this effect.

Conclusions:

The piezothermal effect represents a significant deviation from homogeneous heating in compressed spinning gases.
The findings can be generalized to other potential energy forms and heating methods.
This research offers new insights into thermal behavior in rotating fluid systems.