Orthogonal and antiparallel vortex tubes and energy cascades in quantum turbulence
Orthogonal and antiparallel vortex tubes and energy cascades in quantum turbulence
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量子湍流中的正交和反平行涡管和能量级联
DOI：
10.1103/physrevfluids.3.104606
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发表时间：
2018
影响因子：
2.7
通讯作者：
Tsuyoshi Kadokura and Hiroki Saito
中科院分区：
文献类型：
--
作者：
S Kosugi;N Suzuki;N Kumagai;H Iwayama;E Shigemasa;F Koike and Y Azuma;Hiroki Saito;小杉 聡;Tsuyoshi Kadokura and Hiroki Saito
我们通过直接观察Gross-Pitaevskii方程数值模拟中的涡度分布来研究量子湍流中的能量级联动力学。通过对涡量分布的各个尺度进行傅立叶滤波，发现大尺度反平行涡管产生与大尺度反平行涡管正交的小尺度涡管，这是能量从大尺度到小尺度级联的表现。我们揭示了在这些过程中的量子化涡旋线的动力学。
We investigate the dynamics of energy cascades in quantum turbulence by directly observing the vorticity distributions in numerical simulations of the Gross-Pitaevskii equation. By Fourier filtering each scale of the vorticity distribution, we find that antiparallel vortex tubes at a large scale generate small-scale vortex tubes orthogonal to those at the large scale, which is a manifestation of the energy cascade from large to small scales. We reveal the dynamics of quantized vortex lines in these processes.