Wave Propagation in an Ideal Gas: First and Second Sound. Issue 4 (6th June 2016)

• Record Type: Journal Article
• Authors: Molinari, Vincenzo; Mostacci, Domiziano; Ganapol, Barry D.
• Is Part Of: Journal of computational and theoretical transport. Volume 45:Issue 4(2016)
• Page Start: 268
• Page End: 274
• Publication Date: 2016-06-06
• Subjects: Integral form of the Boltzmann equation -- density waves -- temperature waves -- second sound; Transport theory -- Periodicals; Statistical physics -- Periodicals; Statistical physics; Transport theory; Periodicals; 530.138
• DOI: 10.1080/23324309.2016.1157494
• Languages: English
• ISSNs: 2332-4309

Abstract

ABSTRACT: Propagation of sound waves through an ideal gas is studied in the framework of kinetic theory, starting from the integral representation of the Boltzmann Equation (BE). The distribution function is calculated and used to obtain the dispersion relation of density waves. The parallel existence of temperature waves (in some contexts referred to as second sound) is also part of this investigation. Temperature waves are found to exist; the phase difference between density and temperature waves is determined.