期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 50, 期 47, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/aa8faf
关键词
streamer discharge; 3D simulation; adaptive mesh refinement; streamer interaction; streamer branching; plasma fluid model; geometric multigrid
资金
- Research Foundation-Flanders (FWO) [12Q6117N]
- STW [10755]
We present an open-source plasma fluid code for 2D, cylindrical and 3D simulations of streamer discharges. The code is based on the Afivo framework, which features adaptive mesh refinement on quadtree/octree grids, geometric multigrid methods for Poisson's equation, and OpenMP parallelism. We describe the numerical implementation of a fluid model of the drift-diffusion-reaction type, combined with the local field approximation. Then we demonstrate its functionality with 3D simulations of long positive streamers in nitrogen in undervolted gaps. Three examples are presented. The first one shows how a stochastic background density affects streamer propagation and branching. The second one focuses on the interaction of a streamer with preionized regions, and the third one investigates the interaction between two streamers. The simulations use up to 108 grid cells and run in less than a day; without mesh refinement they would require more than 1012 grid cells.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据