摘要
利用有限差分离散Maxwell方程的方法，以常见的金属铜、人体肌肉、大地和蒸馏水为例，数值模拟了正弦电磁波在良导体和电介质等不同类型导电媒质中的传播情况，形成的波传播图像合理地再现了传播过程，这些图像可以帮助人们正确理解电磁波在不同类型导电媒质中的传播情况，解释现实生活中的一些现象。通过适当改变参数，可以实现不同形式的波传播规律的模拟，程序简单，方便教学应用。
The propagation of sinusoidal wave is simulated in different lossy dielectric media, such as metal cu- prum, human muscle, earth and distilled water, by using finite-difference time-domain method through discre- ted Maxwell＇s equations. The simulation results exhibit the wave propagation process. These results can help us explain the wave propagation in different lossy dielectric media and explain some phenomena in our life. By changing the input parameters appropriately, the computer program can carry out different propagation shapes of wave. The arithmetic is easy to be realized, and convenient in teaching.
出处
《实验技术与管理》
CAS
北大核心
2010年第2期60-62,共3页
Experimental Technology and Management
基金
南京农业大学精品课程建设立项课题(2008-433-JP-2)
关键词
电磁波
传播
媒质
计算机仿真
electromagnetic wave
propagation
media
computer simulation
