时域有限差分法的优化吸收边界条件

Optimized absorbing boundary condition for the finite difference time domain method

基于单向波算子，给出了一个形式简洁的Ｎ阶优化吸收边界条件，给出了确定其参量的方法．数值结果表明，对于特定电磁问题，适当选择参量，优化吸收边界条件优于同阶Ｍｕｒ吸收边界条件．

Based on the one way wave operator, a succinct N order optimized absorbing boundary condition (OABC) is provided. The methods by which the coefficients of the OABC are determined are given. The numerical results show that the OABC is better than the same order Murs absorbing boundary condition when the coefficients of the OABC are appropriately selected for the special electromagnetic problems.