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Article

Acceleration Waves in Rational Extended Thermodynamics of Rarefied Monatomic Gases

by
Francesca Brini
* and
Leonardo Seccia
Department of Mathematics and Alma Mater Research Center on Applied Mathematics AM2, University of Bologna, via Saragozza 8, 40123 Bologna, Italy
*
Author to whom correspondence should be addressed.
Fluids 2020, 5(3), 139; https://doi.org/10.3390/fluids5030139
Submission received: 20 July 2020 / Revised: 18 August 2020 / Accepted: 20 August 2020 / Published: 25 August 2020
(This article belongs to the Special Issue Classical and Modern Topics in Fluid Dynamics and Transport Phenomena)
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Abstract

Rational Extended Thermodynamics theories with different number of moments are usually introduced to study non-equilibrium phenomena in rarefied gases. Here, we use them to describe one-dimensional acceleration waves in a rarefied monatomic gas. In particular, we focus on the degeneracy of the acceleration wave to a shock wave, in order to test the validity of the models and the role played by an increasing number of moments. As a byproduct, some peculiarities of the characteristic velocities at equilibrium are analyzed as well.
Keywords: acceleration waves; rational extended thermodynamics; rarefied monatomic gases acceleration waves; rational extended thermodynamics; rarefied monatomic gases

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MDPI and ACS Style

Brini, F.; Seccia, L. Acceleration Waves in Rational Extended Thermodynamics of Rarefied Monatomic Gases. Fluids 2020, 5, 139. https://doi.org/10.3390/fluids5030139

AMA Style

Brini F, Seccia L. Acceleration Waves in Rational Extended Thermodynamics of Rarefied Monatomic Gases. Fluids. 2020; 5(3):139. https://doi.org/10.3390/fluids5030139

Chicago/Turabian Style

Brini, Francesca, and Leonardo Seccia. 2020. "Acceleration Waves in Rational Extended Thermodynamics of Rarefied Monatomic Gases" Fluids 5, no. 3: 139. https://doi.org/10.3390/fluids5030139

APA Style

Brini, F., & Seccia, L. (2020). Acceleration Waves in Rational Extended Thermodynamics of Rarefied Monatomic Gases. Fluids, 5(3), 139. https://doi.org/10.3390/fluids5030139

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