| 二维大地电磁正演中无网格算法研究 |
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| 引用本文： | 苏洲,胡文宝,朱毅. 二维大地电磁正演中无网格算法研究[J]. 石油天然气学报, 2012, 0(5): 87-90 |
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| 作者姓名： | 苏洲 胡文宝 朱毅 |
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| 作者单位： | 油气资源与勘探技术教育部重点实验室长江大学,湖北荆州434023 |
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| 基金项目： | 国家“973”规划项目（2007cB209607）;国家自然科学基金项目（40727001）. |
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| 摘 要： | 无网格法是近几年来发展的一种新的基于变分原理的数值计算方法,由于在计算形函数中不需要划分网格,在力学、电磁学等领域得到了广泛的研究。基于无网格法在大地电磁勘探正演中的应用进行了研究,首先对无网格法的基本原理进行了阐述,并利用广义变分原理推导出了相应的离散方程,编制了相应的程序。最后通过理论模型的计算结果检验了该算法的正确性。
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| 关 键 词： | 无网格法 大地电磁法 移动最小二乘拟合(MLS) 有限元法 |
Meshfree Method Used in Two-dimensional Magnetotelluric Forwarding |
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| SU Zhou,HU Wen-bao,ZHU Yi. Meshfree Method Used in Two-dimensional Magnetotelluric Forwarding[J]. Journal of Oil and Gas Technology, 2012, 0(5): 87-90 |
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| Authors: | SU Zhou HU Wen-bao ZHU Yi |
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| Affiliation: | (Key Laboratory of Exploration Technologies for Oil and Gas Resources(Yangtze University),Ministry of Education,Jingzhou 434023,Hubei,China) |
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| Abstract: | As a new numerical computational method based on the principle of variation,meshfree methods has maintained a rapid development in recently years.It has widely applied in studying the problem of the mechanics and electromagnetics because of avoiding the onerous mesh generation.The application of meshfree method in magnetotelluric forwarding was studied.First,the fundamental principle of meshfree method was described and the particular meshless calculating formulas were deduced through the generalized variation principle.The program is verified by comparison with the analytic response of a symmetrical ladders model and with finite difference results of laterally inhomogeneous model. |
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| Keywords: | meshfree method magnetotelluric moving least-square method FEM |
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