Thermal self-action effects of acoustic beam in a vibrationally relaxing gas

被引：2
|
作者：
Perelomova, Anna [1 ]
机构：
[1] Gdansk Univ Technol, Fac Appl Phys & Math, PL-80233 Gdansk, Poland
来源：
APPLIED MATHEMATICAL MODELLING | 2014年 / 38卷 / 23期
关键词：
Non-equilibrium gas; Acoustic heating; Self-focusing of acoustic beam; SOUND-AMPLIFICATION; SHOCK-WAVES; NONEQUILIBRIUM; MODES; GENERATION; VISCOSITY; FLOWS;
D O I：
10.1016/j.apm.2014.04.055
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thermal self-action of acoustic beam in a molecular gas with excited internal degrees of molecules' freedom, is studied. This kind of thermal self-action differs from that in a Newtonian fluid. Heating or cooling of a medium takes place due to transfer of internal vibrational energy. Equilibrium and non-equilibrium gases, which may be acoustically active, are considered. A beam in an acoustically active gas is self-focusing unlike a beam in a standard viscous gas. The self-action effects relating to wave beams containing shock fronts, are discussed. Stationary and non-stationary kinds of self-action are considered. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：5684 / 5691
页数：8
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