Observation of traveling thermoacoustic shock waves (L)

被引：21

作者：

Biwa, Tetsushi ^{[1
]}

Takahashi, Takuma ^{[1
]}

Yazaki, Taichi ^{[2
]}

机构：

[1] Tohoku Univ, Dept Mech Syst & Design, Sendai, Miyagi 9808579, Japan

[2] Aichi Univ Educ, Dept Phys, Kariya, Aichi 4488542, Japan

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2011年 / 130卷 / 06期

关键词：

NONLINEAR GAS OSCILLATIONS; STANDING WAVES; CLOSED TUBE; HEAT ENGINE; LOSSY DUCTS; GENERATION; COLUMNS;

D O I：

10.1121/1.3658444

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Shock waves were explored in the thermoacoustic spontaneous gas oscillations occurring in a gas column with a steep temperature gradient. The results show that a periodic shock occurs in the traveling wave mode in a looped tube but not in the standing wave mode in a resonator. Measurements of the harmonic components of the acoustic intensity reveal a clear difference between them. The temperature gradient acts as an acoustic energy source for the harmonic components of the shock wave in the traveling wave mode but as an acoustic energy sink of the second harmonic in the standing wave mode. (C) 2011 Acoustical Society of America. [DOI: 10.1121/1.3658444]

引用

页码：3558 / 3561

页数：4

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