摘要
借助有限元数值模拟软件COMSOL Multiphysics(简称COMSOL)对一均匀带电平面的电场进行了的数值计算,获取了均匀带电平面轴线上场强分布,并与理论值进行了对比,取得了相吻合的对比结果,从而验证了本文方法进行静电场建模与模拟方法的可行性和准确性。在此基础上对现实生活中雷雨天气时带电云层在建筑物顶部激发的电场进行了同样的数值模拟计算,给出了建筑物顶部在有(无)安装避雷针情况下建筑物顶部电场分布情况,分析了避雷针高度、避雷针接地状况等因素对建筑物顶部电场的影响规律,数值模拟结果有助于形象、直观地了解避雷针在保护建筑物时的基本工作原理,相关建模与计算方法对数值模拟其他电磁场也具有一定参考作用。
The electric field intensity of a uniform charged plane is simulated by finite element software COMSOL Multiphysics in this paper. The electric field intensity distribution on the axis of the uniform charged plane is obtained and compared with the theoretical value, which shows agreement between simulations and the theoretical results. Thus, the feasibility and accuracy of the method for modeling the electrostatic field and simulation are verified. On this basis, the electric field produced by the charged cloud during the thunderstorm in real life is simulated numerically by using the finite element method. The electric field distribution on the top of the building is calculated for the cases that the lightning rod is installed and uninstalled, and the influence factors of the electric field at the top of the building such as the height of the lightning rod and the grounding condition of lightning conductor is analyzed. The numerical simulation results can help to build the electric field distribution images and intuitionistic understanding for the basic operating principles of lightning rods in protecting buildings, relevant modeling and calculation methods are also useful for numerical simulation of other electromagnetic fields.
作者
曾鑫
闫向宏
张亚萍
ZENG Xin;YAN Xianghong;ZHANG Yaping(College of Science,China University of Petroleum(East China),Qingdao,Shandong 266580)
出处
《物理与工程》
2020年第5期87-91,共5页
Physics and Engineering
基金
国家自然科学基金项目(11774433)
教育部教指委高等学校教学研究项目(DWJZW201603hd)
山东省本科高校教学改革研究项目(2015M022)
中国石油大学(华东)教学改革项目(JY-B201635
YK201520)
大学生创新创业训练计划项目(20161386)。
关键词
有限元法
电场强度
COMSOL
静电场
finite element method
electric field intensity
COMSOL
Electrostatic field
