Đọc bản đầy đủ ở đây: https://thuvienvatly.com/forums/index.php?topic=13079 Tiêu đề: Vật lý lý thuyết Gửi bởi: ngochocly trong 05:17:37 pm Ngày 03 Tháng Mười Hai, 2012 The FDTD method applies a set of simple central-difference approximations for the space
and time derivatives of electric and magnetic fields that are second-order accurate directly to the respective differential operators of the time-dependent Maxwell’s curl equations, instead of potentials, and therefore, achieves a sampled-data reduction of the continuous electromagnetic fields in a volume of space and over a period of time. Overall, the FDTD technique is a marching-in-time procedure that simulates the actual wave in the finite space lattice by the analogous numerical wave propagation stored in the computer memory. |