节点文献
矩量法在电法勘探三维问题正演中的应用
APPLICATION OF THE MOMENT METHOD TO 3-D NUMERICAL DIRECT PROBLEM OF ELECTRICAL PROSPECTING
【摘要】 对于点电源情况下三维电性分界面上电荷密度函数积分方程,应用矩量法并通过联合使用子域匹配和点匹配,选取Legendre多项式为整域基底函数,利用子域到整域的变换技术求解。模型试算精度(相对均方很差)达到0.69%,计算速度较之有限元法和有限差分法提高约3.5倍。
【Abstract】 In point-source case, solving an integrated equation of the charge densityon 3-dimensional electrostatic interfaces is made by means of the momentmethod through the sub-domain matching method combined with the point-matching method, choosing the Legendre polynomial as the base function ofthe whole-domain and using a transformation technique from sub-domaininto whole-domain in the computing process. The comquting accuracy(relative average square-root error)for several models amount to 0.69%,The computing speed of this method is about 3.5 times as great as that ofthe finite element method and the finite difference method.
【Key words】 electrical prospecting; direct problem; operator equation; numerical solution/moment method; three-dimensional geological body;
- 【文献出处】 桂林冶金地质学院学报 , 编辑部邮箱 ,1991年04期
- 【分类号】P631.31;O174.43
- 【下载频次】34