Cascade Process of Vortex Tangle Dynamics in Superfluid 4He without Mutual Friction
Cascade Process of Vortex Tangle Dynamics in Superfluid 4He without Mutual Friction
复制标题
无互摩擦超流体4He中涡旋缠结动力学的级联过程
DOI：
10.1023/a:1017501730164
复制
发表时间：
2000
影响因子：
2
通讯作者：
M. Tsubota
中科院分区：
文献类型：
--
作者：
T. Araki;M. Tsubota
最近讨论了超流4He在极低温度下的开尔文波级联过程。在这一机制中，涡线上的波动动力学起着重要的作用。为了研究这一机制，我们利用完整的Biot-Savart定律数值研究了重联涡线上的波的动力学。这项工作表明，两个涡旋的重新连接导致了重新连接的涡线上的波。为了讨论涡线上波的能量，计算了重联前后超流的能谱。
Recently the Kelvin wave cascade process in superfluid4He at very low temperatures was discussed. In this mechanism, the dynamics of the waves on the vortex lines plays an important role. In order to investigate this mechanism, we study numerically the dynamics of the waves on the reconnected vortex lines using the full Biot-Savart law. This work shows the reconnection of two vortices leads to the waves on the reconnected vortex lines. To discuss the energy of the waves on the vortex lines, the energy spectrum of the superflow before and after the reconnection is calculated.