不同相对介电常数建筑物对大气电场畸变的研究

The study of Atmospheric Electric Field Distortion on Buildings with Different Relative Permittivity

在大气电场放电的过程中,建筑物以及尖端对大气电场的畸变起着重要的作用,实际生活中,很难保证建筑物为良导体,即建筑物与大地之间并非为一个电势为零的整体,它相对于大地有一个非零的电势。为了更加真实的研究建筑物对大气电场畸变的影响,采用有限元仿真软件ANSYS对不同相对介电常数建筑物对大气电场畸变情况进行仿真,分析得到以下结论:当建筑物的相对介电常数与建筑物周围大气不同时,建筑物内部的电势不为零,电位线穿过建筑物;建筑物顶部大气电场与相对介电常数呈现先增加后无限趋于常数。

Atmospheric electric field distortion, near the building and its tips, plays an important role in the atmospheric electric field during discharge. In fact, it is difficult to guarantee the building of good conductors. In order to study the influence of atmospheric electric field distortion on buildings, the author simulate the problem by the finite element simulation software ANSYS. Potential line through the building; At the top of the building, the atmospheric electric field and the relative permittivity increases first, then the infinite tends to constant.