三分量磁场延拓的递推算法  

Iterative Method for Continuation of Three-component Magnetic Field

作　　者：闫辉[1] 肖昌汉[1] 张朝阳[1] 朱兴乐[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北武汉430033

出　　处：《计算物理》2010年第5期705-710,共6页Chinese Journal of Computational Physics

基　　金：国家海洋专项基金(9201807)资助项目

摘　　要：提出一种三分量磁场延拓的递推算法,主要目的是解决三分量磁场的向下延拓问题.应用微分学基本原理,将具有相同水平坐标,不同垂向坐标的点上的三分量磁场,通过磁场的垂向偏导数的积分联系起来.根据磁场向量散度和旋度的性质,将磁场的垂向偏导数与水平方向的偏导数联系起来.这样,在已知一个平面上的磁场时,可以通过递推的办法逐层求取该平面以下任意平面上的三分量磁场.应用实例证明方法的快速性和准确性.An iterative continuation method for three-component magnetic field is presented. It aims at downward continuation of three-component magnetic field. The fields on those points with same horizontal coordinates are related by differential calculus. As divergence and rotation of three-component magnetic field are taken into consideration, vertical derivatives can be described with horizontal derivatives. As three-component magnetic field on an upper plane is known, magnetic fields on lower planes can be computed with an iterative procedure. Efficiency and accuracy are illustrated by applications.

关 键 词：三分量磁场 位场延拓 边界单元法 等效源法 

分 类 号：P631[天文地球—地质矿产勘探]