指数差分离散的完全匹配层吸收边界条件在ADI-FDTD中的应用

Using exponentall difference method perfectly matched layer for unconditionally stable ADI-FDTD

将指数差分离散的完全匹配层(PML)吸收边界条件应用于交替方向隐式的时域有限差分法(ADI-FDTD)中,可以更好地反映PML中电磁波衰减快的特点。数值实验表明,采用这种计算方法在ADI-FDTD中有很好的稳定性和吸收效果。

A perfectly matched layer （PML） by using exponent difference method is incestigated. In order to verify the characteristic of the PML in which the electromagnetic wave is decayed very soon, the algorithm is imported in the alternating- direction- implicit （ ADI ） finite- difference time - domai （ FDTD ） method. Numerial experiment is shown that proposed method can get good stability and absorbing effect.