传播超流涡阵面中的量子turbulence
Quantum turbulence in propagating superfluid vortex front
摘要：
我们提出了实验，数值和理论研究的涡前传播到一个区域的无涡流动的旋转超流3 He-B。我们表明，随着温度的降低，从层流通过准经典湍流量子湍流的前面的性质的变化。我们的实验提供了第一个直接测量的耗散率在湍流涡旋动力学的3 He-B，并表明，耗散是温度和相互摩擦无关的T->0限制，并强烈抑制时，开尔文波级联涡线被预测参与湍流能量传递到较小的长度尺度。
英文摘要：
We present experimental, numerical and theoretical studies of a vortex front propagating into a region of vortex-free flow of rotating superfluid 3He-B. We show that the nature of the front changes from laminar through quasi-classical turbulent to quantum turbulent with decreasing temperature. Our experiment provides the first direct measurement of the dissipation rate in turbulent vortex dynamics of 3He-B and demonstrates that the dissipation is temperature- and mutual friction-independent in the T->0 limit, and is strongly suppressed when the Kelvin-wave cascade on vortex lines is predicted to be involved in the turbulent energy transfer to smaller length scales.
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