时间域激发极化法三维有限元正演  

A 3D FEM for Time Domain Induced Polarization

作　　者：骆红梅 LUO Hong-Mei(Fujian Geologic Surveying And Mapping Institute,Fuzhou 350011,China)

机构地区：[1]福建省地质测绘院,福建福州350011

出　　处：《世界有色金属》2020年第23期176-177,共2页World Nonferrous Metals

摘　　要：本文采用三维有限元数值模拟的方法,通过在三维有限元模拟直流电的基础上加入COLE-COLE模型对时间域激发极化法进行了正演。其中时间域COLE-COLE模型的加入采用数字滤波的方法,有效的避免了计算γ函数带来的麻烦;对三维有限元单元合成后的稀疏对称矩阵采用CSR存储格式和PARDISO并行求解方法。试算了模型,结果证明本文所采用的方法计算速度高,精度可靠。In this paper,the three-dimensional finite element numerical simulation method is adopted,and the Cole-Cole model is added on the basis of the three-dimensional finite element simulation of direct current.The digital filtering method is used to add the time domain Cole-Cole model,which effectively avoids the trouble caused by the calculation gamma function;the CSR storage format and pardiso parallel solution method are used to solve the sparse symmetric matrix after the synthesis of three-dimensional finite element elements.The model is tested and the results show that the method used in this paper has high calculation speed and reliable accuracy.

关 键 词：时间域激发极化法 三维有限元正演 COLE-COLE CSR PARDISO 

分 类 号：P631.3[天文地球—地质矿产勘探]