Edge finite-element modeling using unstructured meshes: the 3D MT example
Three-dimension (3D) forward modeling is a challenging problem for geometrically complex MT problems. We presented a new edge-based finite-element algorithm cooperated with unstructured mesh for accurately and efficiently simulating 3D MT responses. The curl-curl equation of electric field in frequency was used to deduce the H(curl) variation weak form; and then, Galerkin weighting rule was performed on the linear unstructured edge-based finite-element space to obtain a sparse complex linear equation; finally, BI-CGSTAB solver with ILU preconditioner was employed to offer the unknown electric fields. A local mesh refinement technique in the neighbor of measuring MT stations was used to distinctly update the accuracies of numerical solutions. Two synthetic models validated the powerful performances of our algorithms. We believe our method should have more legs in more complex MT cases.
Magnetotellurics modeling edge finite-element unstructured mesh mesh local refinement
REN Zhengyong TANG Jingtian LIU Changsheng
School of Info-physics and Geometrics Engineering, Central South University, Changsha, China, School of Info-physics and Geometrics Engineering, Central South University, Changsha, China: School of Info-physics and Geometrics Engineering, Central South University, Changsha, China:Departm
国际会议
The 19th International Workshop on Electromagnetic Induction in the Earth(第十九届国际地球电磁感应学术研讨会)
北京
英文
520-525
2008-10-23（万方平台首次上网日期，不代表论文的发表时间）