线源二维时间域电磁响应的有限差分解

线源二维时间域电磁响应的有限差分解

阮百尧徐世浙

桂林工学院

收稿日期:1996-12-20 修回日期:1996-12-20 出版日期:1996-12-20 发布日期:1996-12-20

FINITE-DIFFERENCE CALCULATIONS OF TRANSIENT TIME DOMAIN ELECTROMAGNETIC FIELD OF A TWO-DIMENSIONAL

Ruan Baiyao1, Xu Shizhe2

1. Guilin Institute of Technology; 2. Ocean University of Qingdao

Received:1996-12-20 Revised:1996-12-20 Online:1996-12-20 Published:1996-12-20

摘要/Abstract

摘要： 本文以ＫｕｏａｎｄＣｈｏ（１９８０）和ＯｒｉｓｔａｇｌｉｏａｎｄＨｏｈｍａｎｎ（１９８３）工作基础，对时间域中直接求解无限长电流源激发下任意二维电阻率分布的麦克期韦方程的有限差分方法进行了重新研究。提出了一种改进方法，这种方法的独特的上在于用变化方向法把二维问题化为一系列一维问题来求解，并保留了前人在地－空边界使用地表向拓的边界条件以避免求空气中的场的处理技术，从而节省了计算机内存，简化了计计算方法和提高了运算速度。文章计算了多个模型的数值解，结果表明方法具有较高的计算精度。

Abstract: According to the works of Kuo and Cho(1980) and Oriistaglio and Hohmann(1984), a modified finite-difference approach technique was presented in this paper for solving time-stepping Maxwell’s equations of an arbitrary two dimension was reduced to a series of one dimension by the methodology of transferring direction was reduced to a series of one dimension by the methodology of transferring direction, and the previous technique was retained in which the boundary condition of an upward continuation at the earth air interface was applied to avoid finding the solutions of the air layer in the grid. Thus the computer’ memory was saved, calculating method was simplified and calculation can speed up. Solutions of various models showed that this method has great calculation precision.

阮百尧徐世浙. 线源二维时间域电磁响应的有限差分解[J]. J4.

Ruan Baiyao1, Xu Shizhe2. FINITE-DIFFERENCE CALCULATIONS OF TRANSIENT TIME DOMAIN ELECTROMAGNETIC FIELD OF A TWO-DIMENSIONAL[J]. J4.