WE -FDTD 中近似吸收边界条件的角点计算

摘要

从线性插值思想出发研究波动方程时域有限差分法（ WE-FDTD ）中二维二阶近似吸收边界条件差分格式下矩形网格空间角点的场量计算方法。提出确定线性插值点位置的原则和线性插值点场量的迭代方法，考虑衰减因素进而计算角点的场量。%This paper starts based on the wave equation finite-difference time-domain method from linear interpolation method in two dimensional order absorbing boundary condition difference field rectangular grid spatial format angle calculation method .It presents to determine the principle of linear interpolation point and linear interpolation method , considering the attenuation factor .