Efficient 3D vector finite element modeling for TEM based on absorbing boundary condition
文献类型：期刊论文
| 作者 | Zhang YongChao2,4,5; Wang GuangJie1,3; Li HongJie2,4,5; Lian YuGuang2,4,5; Li Wen2,4,5; Qiu Hao2,4,5; Mou Yi2,4,5 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 64期号:3页码:1106-1118 |
| 关键词 | TEM Forward modeling Vector finite element Absorbing boundary condition |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2021N0137 |
| 英文摘要 | The homogeneous boundary condition is commonly used in the 3D FEM forward modeling of TEM. In order to satisfy the approximation of this boundary condition, it is necessary to construct a large-scale model, which reduces the solving speed of the forward problem. Aiming at the problem, in this paper, absorbing boundary condition was used to reduce the size of the model and accelerate the solution speed instead of homogeneous boundary condition. Firstly, the differential equation of magnetic vector potential based on Coulomb's gauge was derived from Maxwell' s equations in time domain, combining the first-order absorbing boundary condition, the corresponding weak form equation was deduced and simplified. Then, by using the first-order tetrahedral vector element to carry out element analysis, Newmark method for time discretization, an efficient TEM 3D modeling method was realized. The proposed algorithm was validated by comparing the analytical solution of homogeneous half space, the CR1Dmod solution of H-type geoelectric section, with their corresponding finite element solution. The further comparison between the modeling results of absorbing boundary condition and homogeneous boundary condition showed that the absorbing boundary condition could improve the accuracy of 3D modeling or reduce the size of the model and accelerate the solution speed. |
| WOS关键词 | TRANSIENT ELECTROMAGNETIC METHOD ; FREQUENCY-DOMAIN ; VOLUME METHOD ; DIFFERENCE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000626293700028 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/100994]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Wang GuangJie |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Beijing Coal Mine Safety Engn Technol Res Ctr, Beijing 100013, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.China Coal Res Inst, State Key Lab Coal Min & Clean Utilizat, Beijing 100013, Peoples R China 5.China Coal Res Inst, Mine Safety Technol Branch, Beijing 100013, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang YongChao,Wang GuangJie,Li HongJie,et al. Efficient 3D vector finite element modeling for TEM based on absorbing boundary condition[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(3):1106-1118. |
| APA | Zhang YongChao.,Wang GuangJie.,Li HongJie.,Lian YuGuang.,Li Wen.,...&Mou Yi.(2021).Efficient 3D vector finite element modeling for TEM based on absorbing boundary condition.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(3),1106-1118. |
| MLA | Zhang YongChao,et al."Efficient 3D vector finite element modeling for TEM based on absorbing boundary condition".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.3(2021):1106-1118. |
入库方式： OAI收割
来源：地质与地球物理研究所
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