Vortex density spectrum of quantum turbulence
Vortex density spectrum of quantum turbulence
复制标题
量子湍流的涡旋密度谱
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
H. Willaime
中科院分区：
文献类型：
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作者：
P. Roche;P. Diribarne;T. Didelot;Olivier Franccais;Lionel Rousseau;H. Willaime
本文从局域二次声衰减测量中导出了湍流量子流体中涡旋密度的涨落。这些测量是用一个微机械加工的开放腔谐振器插入在1.6 K附近的湍流He-II流中进行的。测得的涡线密度的频率功率谱符合（-5/3）幂律。物理解释进行了讨论。
The fluctuations of the vortex density in a turbulent quantum fluid are deduced from local second-sound attenuation measurements. These measurements are performed with a micromachined open-cavity resonator inserted across a flow of turbulent He-II near 1.6 K. The frequency power spectrum of the measured vortex line density is compatible with a (−5/3) power law. The physical interpretation is discussed.