.png){kind=icon}
返回
High-Accuracy 3-D TEM Forward Modeling Using Adaptive Finite Element Method
.png){kind=icon}
PRE
AI
DOI：10.1109/TGRS.2023.3324461.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The accurate and efficient forward modeling of the transient electromagnetic (TEM) method requires proper mesh generation, which influences both calculation speed and response accuracy. This article presents a 3-D TEM forward modeling method that achieves high accuracy by using a frequency-to-time domain transformation strategy and adaptive mesh refinements in the frequency domain. Specifically, an interpolation-based Fourier transform method is employed to reduce the number of computed frequencies in the frequency domain, resulting in significant efficiency improvement without compromising accuracy. Furthermore, the method incorporates unstructured tetrahedral meshes and an adaptive finite element (FE) algorithm based on posterior error estimators to enhance the accuracy of the frequency-domain response calculation. The proposed method is applied to the widely used long-offset TEM (LOTEM) system. The accuracy of the method is verified by comparing the simulated response of a layered model with the analytical solution. In addition, the effectiveness of the algorithm is tested using three 3-D models. Cross-validation results with other popular open-source codes demonstrate that the proposed method can achieve high accuracy and efficiency for both simple and complex models.
Keyword:
Adaptive finite element method (AFEM)
Fourier transform
transient electromagnetic (TEM) method
unstructured mesh
期刊
IF:
8.6
论文数:
2.2W
被引数:
10.7W
机构
引用论文
Three effective inverse Laplace transform algorithms for computing time-domain electromagnetic responses.png)
GEOPHYSICS
GEOPHYSICSIF3.2
PREAI
分享收藏
分享收藏Large-scale 3D geoelectromagnetic modeling using parallel adaptive high-order finite element methodGEOPHYSICS
OAAI
GEOPHYSICSIF3.2
OAAI分享收藏
查看更多内容