水平场转换函数空间分布特征的数值模拟

NUMERICAL MODELING FOR THE SPATIAL DISTRIBU- TION CHARACTERISTICS OF HORIZONTAL FIELD TRANSFER FUNCTION

应用三维有限差方法 ,对长方形导体的水平场转换函数分布特征进行数值模拟计算 ,给出了实部和虚部的分布规律 ,并研究了源场周期、导体导电率、导体埋深、导体长度对转换函数取值的影响 .转换函数的极值分布在导体中央、4个犄角和边界附近 ,且随边界而移动 。

Applying 3 dimension finite difference method,the distribution characteristics of horizontal field transfer functions for rectangular conductor have been computed,and the law of distribution for Re part and Im part has been given.The influences of source field period,the conductivity,the buried depth and the length of the conductor on the transfer functions were studied.The extrema of transfer functions appear at the center,the four corners and around the edges of the conductor,and move with the edges.This feature demonstrates that around the edges are the best places for transfer functions th be observed.