Eur. Phys. J. Appl. Phys.
Volume 52, Number 3, December 2010
|Number of page(s)||6|
|Section||Physics and Mechanics of Fluids, Microfluidics|
|Published online||30 November 2010|
Dispersion relations of plane waves in system of hard-disk-like rotating gases
Wu C-S Institute, 2/F, No. 24, First Section, Lane 260, Muzha Road, Taipei, Taiwan, 116, P.R. China
Corresponding author: email@example.com
Revised: 24 January 2010
Accepted: 25 August 2010
Published online: 30 November 2010
The discrete kinetic model is used to study the propagation of sound waves in system of hard-disk-like rotating gases. The anomalous (negative) attenuation or amplification which is possibly due to the binary collision of a dilute-enough rotating disk system (each with opposite-sign rotating direction or angular momenta but the total (net) angular momenta is zero) or microreversibility might arise from the implicit balance of the angular momentum during encounter. Our results might give useful idea to the instrumentation set-up of possible acceleration of cosmic rays passing through this kind of channel and direct or inverse cascades in two-dimensional rotating gases of astrophysical problems.
© EDP Sciences, 2010
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