The intermittency of turbulent superfluid helium is explored systematically in a steady wake flow from 1.28 K up to T>2.18K using a local anemometer. This temperature range spans relative densities of superfluid from 96% down to 0%, allowing to test numerical predictions of enhancement or depletion of intermittency at intermediate superfluid fractions. Using the so-called extended self-similarity method, scaling exponents of structure functions have been calculated. No evidence of temperature dependence is found on these scaling exponents in the upper part of the inertial cascade, where turbulence is well developed and fully resolved by the probe. This result supports the picture of a profound analogy between classical and quantum turbulence in their inertial range, including the violation of self-similarities associated with inertial-range intermittency.

中文翻译：

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超流体分数从 0% 到 96% 的量子湍流的间歇性

使用局部风速计在从 1.28 K 到 T>2.18K 的稳定尾流中系统地探索湍流超流体氦的间歇性。该温度范围涵盖了从 96% 到 0% 的超流体相对密度，允许测试中间超流体部分的间歇性增强或消耗的数值预测。使用所谓的扩展自相似方法，计算了结构函数的标度指数。在惯性级联的上部，在这些比例指数上没有发现温度依赖性的证据，在那里湍流得到了很好的发展并被探头完全解决。这一结果支持了经典湍流和量子湍流在惯性范围内的深刻类比，