摘要
讨论了地下垂直线源分段计算和场叠加的方法,并实现了在套管上供直流电的三维数值模拟。讨论了大型容量矩阵的压缩存储方式,采用数组和结构体相结合的方法实现容量矩阵的一维链表式压缩存储。在求解超大型稀疏线形方程组时引入不完全Cholesky分解稳定化的双共轭梯度算法(ICBG),通过与均匀半空间垂直线源解析解的对比,证明了该算法是准确可靠的。
The paper discusses the calculation method of field induced by vertical line sources by segments and field stacking.The method realizes 3D modeling of field induced by DC in cased well.The paper analyzes compress storage of large coefficient matrix which realizes 1D chain compress storage of coefficient matrix by combination of array and structure.During solution of supper-large sparse system of linear equations,incomplete Cholesky factorization of stabilized biconjugate gradient(ICBG) method is applied.Comparing of the analytic solutions and numerical ones of line sources in homogeneous half-space indicates that the method is accurate and reliable.
出处
《物探化探计算技术》
CAS
CSCD
2006年第4期322-327,共6页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金重点项目(40434010)
