Transport scaling and trapping
Transport scaling and trapping
复制标题
传输缩放和捕获
DOI：
10.1017/s0022377898006631
复制
发表时间：
1998
影响因子：
2.5
通讯作者：
J. Misguich
中科院分区：
文献类型：
--
作者：
M. Vlad;J. Reuss;F. Spineanu;J. Misguich
结果表明，粒子捕获在湍流场的反常或奇怪的扩散的外观起着重要的作用，主要是通过诱导一个非高斯统计的随机位移。捕获过程是负责的重要偏差之间观察到的Bohm标度的传统预测在低频湍流中的扩散和Isichenko的数值检验预测。此外，一些理论模型的建议或审查。
It is shown that particle trapping plays an important role in the appearance of anomalous or strange diffusion in turbulent fields, mainly by inducing a non-Gaussian statistics of the stochastic displacements. Trapping processes are responsible for the important deviation observed between the traditional prediction of Bohm scaling for diffusion in low-frequency turbulence and the numerically checked prediction by Isichenko. Also, several theoretical models are proposed or reviewed.