首页> 外文OA文献 >Identification of intermittent multi-fractal turbulence in fully kinetic simulations of magnetic reconnection
【2h】

Identification of intermittent multi-fractal turbulence in fully kinetic simulations of magnetic reconnection

机译:完全动力学中间断多分形湍流的识别   磁重联的模拟

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Recent fully nonlinear, kinetic three-dimensional simulations of magneticreconnection [Daughton et al. 2011] evolve structures and exhibit dynamics onmultiple scales, in a manner reminiscent of turbulence. These simulations ofreconnection are among the first to be performed at sufficient spatio-temporalresolution to allow formal quantitative analysis of statistical scaling whichwe present here. We find that the magnetic field fluctuations generated byreconnection are anisotropic, have non-trivial spatial correlation and exhibitthe hallmarks of finite range fluid turbulence; they have non-Gaussiandistributions, exhibit Extended Self-Similarity in their scaling and arespatially multifractal. Furthermore, we find that the field J.E is alsomultifractal, so that magnetic energy is converted to plasma kinetic energy ina manner that is spatially intermittent. This suggests that dissipation in thissense in collisionless reconnection on kinetic scales has an analogue influid-like turbulent phenomenology, in that it proceeds via multifractalstructures generated by an intermittent cascade.
机译:最近的磁重连接的完全非线性,动力学三维模拟[Daughton等。 [2011年]以令人联想起湍流的方式进化结构并在多个尺度上展现动力学。这些重新连接的模拟是第一个以足够的时空分辨率执行的模拟,以允许对统计标度进行形式上的定量分析。我们发现,重新连接产生的磁场波动是各向异性的,具有非平凡的空间相关性,并表现出有限范围流体湍流的特征。它们具有非高斯分布,在标度上表现出扩展的自相似性,并且在空间上具有多重分形。此外,我们发现磁场J.E也是多重分形的,因此磁能以空间间歇的方式转换为等离子体动能。这表明,在动力学尺度上的无碰撞重新连接中,这种意义上的耗散具有类似流体的湍流现象,因为它是通过间歇级联产生的多重分形结构进行的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号