TY - JOUR
T1 - ADI-FDTD Method for Two-Dimensional Transient Electromagnetic Problems
AU - Wanshan Li, Yile Zhang, Yau Shu Wong & Dong Liang
JO - Communications in Computational Physics
VL - 1
SP - 94
EP - 123
PY - 2018
DA - 2018/04
SN - 19
DO - http://doi.org/10.4208/cicp.160914.270315a
UR - https://global-sci.org/intro/article_detail/cicp/11081.html
KW - 
AB - <p style="text-align: justify;">An efficient and accurate numerical scheme is proposed for solving the transverse
electric (TE) mode electromagnetic (EM) propagation problem in two-dimensional
earth. The scheme is based on the alternating direction finite-difference time-domain
(ADI-FDTD) method. Unlike the conventional upward continuation approach for the
earth-air interface, an integral formulation for the interface boundary is developed and
it is effectively incorporated to the ADI solver. Stability and convergence analysis together
with an error estimate are presented. Numerical simulations are carried out
to validate the proposed method, and the advantage of the present method over the
popular Du-Fort-Frankel scheme is clearly demonstrated. Examples of the electromagnetic
field propagation in the ground with anomaly further verify the effectiveness of
the proposed scheme.</p>