摘要
根据毕奥-萨代尔定律以及安培环路定理,推导出积分形式的磁感应强度表达式。借助MATLAB的符号积分给出计算结果,并绘制出磁场分布的三维曲线。讨论得出磁场的分布规律为:有限长螺线管外部电磁场分布基本稳定,近轴心处强,远离轴心逐渐减小。
According to the law of Blot-Mr Dyer and the ampere loop theorem, integral form of the magnetic induc- tion intensity expression is deduced. Calculation results are obtained using MATLAB symbolic integral, and three- dimensional curve of the magnetic field distribution is drawn. It is concluded that the finite length solenoid external electromagnetic field distribution is basically stable. It is strong near the hub and decreases away from the axis.
出处
《物理测试》
CAS
2014年第1期51-54,共4页
Physics Examination and Testing
基金
陕西省重点科研项目(000162)
