论文标题
螺旋湍流中的腹部转移
Enstrophy transfers in helical turbulence
论文作者
论文摘要
在本文中，我们使用直接数值模拟研究了螺旋湍流中的腹膜透射术。我们观察到，螺旋注射对惯性范围的能量和螺旋光谱（$ \ sim k^{ - 5/3} $）和磁通（常数）没有重大影响。我们还通过对涡度和涡度通道涡度的速度来计算对腹部转移的单独贡献。与以前的通道或涡度拉伸相关的四个不同的肠通量，以及与后者通道或涡流对流相关的一个通量。在惯性范围内，由于涡度拉伸引起的通量大于对流的通量。这些转移也对螺旋注射不敏感。
In this paper we study the enstrophy transers in helical turbulence using direct numerical simulation. We observe that the helicity injection does not have significant effects on the inertial-range energy and helicity spectra ($\sim k^{-5/3}$) and fluxes (constants). We also calculate the separate contributions to enstrophy transfers via velocity to vorticity and vorticity to vorticity channels. There are four different enstrophy fluxes associated with the former channel or vorticity stretching, and one flux associated with the latter channel or vorticity advection. In the inertial range, the fluxes due to vorticity stretching are larger than that due to advection. These transfers too are insensitive to helicity injection.
