Controlled source electromagnetic 3-D modeling in frequency domain by finite element method
Controlled source electromagnetic 3-D modeling in frequency domain by finite element method
复制标题
通过有限元法进行频域受控源电磁 3D 建模
DOI：
--
复制
发表时间：
2010
影响因子：
1.4
通讯作者：
Xu Zhi-Feng
中科院分区：
文献类型：
--
作者：
Wu Xiao-Ping;Xu Zhi-Feng
本文采用电磁场的磁矢势和电标势，将麦克斯韦方程组转化为磁矢势的偏微分方程，在三维电磁场有限元中引入罚项以消除伪解，并采用稳定化方法克服数值不稳定性。为了减少计算量，采用了一种人工边界来划分较小的区域，人工边界采用第一类边界条件，计算结果表明，在均匀半空间中，水平偶极子源激发的电势值为3-本文对理论模型和复杂模型进行了三维可控源电磁场有限元模拟，给出了稳定可靠的电磁场解。
Magnetic vector potential and electric scalar potential of electromagnetic field are employed in this paper and the Maxwell's equations can be transformed into partial differential equation of the potential,which is akin to Helmholtz equation.A penalty term is added to eliminate the spurious solution and a stabilization method is used to overcome the numerical instability in 3-D electromagnetic finite element (FE) simulation.An artificial boundary delimiting a relatively small area is adopted to reduce computation consumption.The first-kind boundary condition is employed at the artificial boundary,which is the value of potential excited by a horizontal dipole source in homogeneous half space.Our results show that 3-D controlled source electromagnetic FE simulations for theoretical and complicate models in this paper give stable and trustworthy solutions of electromagnetic field.