摘要翻译：
本文提出了一维超临界流体中临界点附近热声现象的一般理论。我们考虑了边界壁的热传导和临界点附近的体积粘度的影响。我们引入了一个系数$z(\omega)$来表征频率为$\omega$的声音在边界处的反射。作为应用，我们考察了单元中的声学本征模，对随时间变化的扰动的响应，边界处的声发射和声反射。共振和快速绝热变化是值得注意的。在这些过程中，由于热膨胀的临界发散性较强，热扩散层在临界点附近的作用增强。
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英文标题：
《Thermoacoustic effects in supercritical fluids near the critical point:
  Resonance, piston effect, and acoustic emission and reflection》
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作者：
Akira Onuki
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最新提交年份：
2007
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分类信息：

一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
  We present a general theory of thermoacoustic phenomena in supercritical fluids near the critical point in a one-dimensional cell. We take into account the effects of the heat conduction in the boundary walls and the bulk viscosity near the critical point. We introduce a coefficient $Z(\omega)$ characterizing reflection of sound with frequency $\omega$ at the boundary. As applications, we examine the acoustic eigenmodes in the cell, the response to time-dependent perturbations, sound emission and reflection at the boundary. Resonance and rapid adiabatic changes are noteworthy. In these processes, the role of the thermal diffusion layers is enhanced near the critical point because of the strong critical divergence of the thermal expansion.
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PDF链接：
https://arxiv.org/pdf/709.0571