Ultrasound propagation studied using the discrete kinetic theory

Authors
Citation
Akh. Chu, Ultrasound propagation studied using the discrete kinetic theory, J PHYS-COND, 11(45), 1999, pp. 8819-8828
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
11
Issue
45
Year of publication
1999
Pages
8819 - 8828
Database
ISI
SICI code
0953-8984(19991115)11:45<8819:UPSUTD>2.0.ZU;2-0
Abstract
We use discrete kinetic models to study the dispersion relations of the one -dimensional plane-ultrasound-wave propagation in monatomic gases, which ar e fundamental in non-equilibrium statistical thermodynamics. The results sh ow that six- and eight-velocity models can capture the propagation of the d iffusion mode, which has not been reported on since 1965. A four-velocity m odel is seen to capture the propagation of the sound mode in the higher-Knu dsen-number regime quite well when we compare our calculated results on the dispersion (phase speed and absorption) relations with Greenspan's measure ments.