| 有限单元法求解水中二维体问题正演研究 |
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| 引用本文： | 林文东,张志勇,刘庆成,汤洪志,周峰.有限单元法求解水中二维体问题正演研究[J].物探化探计算技术,2014(2):164-169. |
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| 作者姓名： | 林文东 张志勇 刘庆成 汤洪志 周峰 |
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| 作者单位： | [1]东华理工大学核工程与地球物理学院,抚州344000 [2]中南大学地球科学与信息物理学院,长沙410083 [3]东华理工大学核资源与环境教育部重点实验室,南昌330013 |
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| 基金项目： | 国家自然科学基金项目（41304055）;863计划项目（2012AA09A404） |
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| 摘 要： | 潜艇在现代海军中占有举足轻重的地位,所以反潜技术也越来越重要,相对于传统的声波、磁法等反潜技术,电磁法探测是近几年才开始起步的。这里研究了电磁法探测水下二维体的问题,基于天然电磁场的有限单元正演,同时考虑电阻率与磁导率,采用三角剖分,通过模型试算验证了天然电磁场的有限元算法在水下二维体探测中,具有较高的精度和适用性,模拟结果 TM模式优于TE模式,可以为电磁法探测水下潜艇打下坚实基础。
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| 关 键 词： | 电磁法 水下二维体 有限单元法 |
Forward modeling research on the 2D-object underwater using finite element Method |
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| LIN Wen-dong,ZHANG Zhi-yong,LIU qing-cheng,TANG Hong-zhi,ZHOU feng.Forward modeling research on the 2D-object underwater using finite element Method[J].Computing Techniques For Geophysical and Geochemical Exploration,2014(2):164-169. |
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| Authors: | LIN Wen-dong ZHANG Zhi-yong LIU qing-cheng TANG Hong-zhi ZHOU feng |
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| Institution: | 1. School of Nuclear Engineering and Geophysics, East China Institute of Technology, Fuzhou 344000,China; 2. School of Geosciences and Info Physics, Central South University, Changsha 410083, China; 3. Key Laboratory of Nuclear Resources and Environment Ministry of Education, East China Institute of Technology, Nanchang 330013, China) |
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| Abstract: | Submarine plays a very important role in the modern navy, so anti-submarine technology becomes more and more important than ever before. Compared with the traditional technology, such as acoustic, magnetic or other anti submarine, the electromagnetic method is started in recent years. In this paper, it is studied that using electromagnetic method to detect the 2D object underwater. Based on the forward modeling of finite element for magnetotelluric method, it is verified that it has accuracy and applicability in detecting the 2D object underwater through the method of finite element for natural electromag netic field, which triangulation is used and resistivity and magneto conductivity are taken into consideration. The simulation result shows that TM model is better than TE model. It is also can lay a solid foundation for detecting submarine underwater. |
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| Keywords: | magnetotelluric the 2D object underwater finite element method |
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