A practical nonlocal model for heat transport in magnetized laser plasmas
A practical nonlocal model for heat transport in magnetized laser plasmas
复制标题
磁化激光等离子体中热传输的实用非局域模型
DOI：
10.1063/1.2179392
复制
发表时间：
2006
影响因子：
2.2
通讯作者：
G. Schurtz
中科院分区：
文献类型：
--
作者：
P. Nicolaï;J. Feugeas;G. Schurtz
提出了多维辐射磁流体力学代码的非局部输运模型。在激光产生的等离子体中，现在人们认为电子传导的非局域性质可以强烈地改变热输运。其他机制，如自生磁场，也可能影响热输运。在这项工作中描述的模型，基于简化的福克-普朗克方程，旨在扩展G. Schurtz， Nicolai博士和M. Busquet[物理学家]的模型。等离子体学报[j] ., 2008(2)。由具有自洽电场和自洽磁场的动力学方程导出了一个完整的非局部方程组。对这些方程进行了分析和简化，以便实现大型激光核聚变代码并与其他相关物理耦合。将该模型应用于两种激光结构，证明了该模型的主要特征，并指出了多维情况下的非局域Righi-Leduc效应。
A model of nonlocal transport for multidimensional radiation magnetohydrodynamics codes is presented. In laser produced plasmas, it is now believed that the heat transport can be strongly modified by the nonlocal nature of the electron conduction. Other mechanisms, such as self-generated magnetic fields, may also affect the heat transport. The model described in this work, based on simplified Fokker-Planck equations aims at extending the model of G. Schurtz, Ph. Nicolai, and M. Busquet [Phys. Plasmas 7, 4238 (2000)] to magnetized plasmas. A complete system of nonlocal equations is derived from kinetic equations with self-consistent electric and magnetic fields. These equations are analyzed and simplified in order to be implemented into large laser fusion codes and coupled to other relevant physics. The model is applied to two laser configurations that demonstrate the main features of the model and point out the nonlocal Righi-Leduc effect in a multidimensional case.