李俊杰, 严家斌. 无网格局部Petrov-Galerkin法大地电磁二维正演[J]. 煤田地质与勘探, 2014, 42(6): 101-104,109. DOI: 10.3969/j.issn.1001-1986.2014.06.021
引用本文: 李俊杰, 严家斌. 无网格局部Petrov-Galerkin法大地电磁二维正演[J]. 煤田地质与勘探, 2014, 42(6): 101-104,109. DOI: 10.3969/j.issn.1001-1986.2014.06.021
LI Junjie, YAN Jiabin. Magnetotelluric two-dimensional forward modeling using meshless local Petrov-Galerkin method[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(6): 101-104,109. DOI: 10.3969/j.issn.1001-1986.2014.06.021
Citation: LI Junjie, YAN Jiabin. Magnetotelluric two-dimensional forward modeling using meshless local Petrov-Galerkin method[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(6): 101-104,109. DOI: 10.3969/j.issn.1001-1986.2014.06.021

无网格局部Petrov-Galerkin法大地电磁二维正演

Magnetotelluric two-dimensional forward modeling using meshless local Petrov-Galerkin method

  • 摘要: 将无网格局部Petrov-Galerkin算法用于大地电磁二维正演。介绍了该方法的基本原理;从大地电磁二维边值问题出发,利用子域法详细推导了与之对应的局部Petrov-Galerkin弱式方程,并用高斯积分法将其离散化。论述了无网格局部Petrov-Galerkin法较无单元Galerkin法及有限元法的优缺点,最后通过二维模型的计算验证了算法的有效性。

     

    Abstract: This Paper devotes meshless local Petrov-Galerkin method to magnetotelluric two-dimensional forward modeling. Its basic principle was introduced. From magnetolelluric 2-D boundary values, using subdomain method, the corresponding weak equation of local Petrov-Galerkin is derived and discreted by gauss integral method. The advantages and disadvantages of meshless local Petrov-Galerkin method are discussed in comparison with element-free Galerkin method and finite element method. At last, the validity of the algorithm is verified by two-dimensional model calculations.

     

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