|Table of Contents|

Geophysical Electromagnetic Field 3D Forward Modeling Simulation Software System EMSIM Based on the Finite Element(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2025年第05期
Page:
857-870
Research Field:
应用地球物理
Publishing date:

Info

Title:
Geophysical Electromagnetic Field 3D Forward Modeling Simulation Software System EMSIM Based on the Finite Element
Author(s):
CHEN Wei-ying1; 2*;  XUE Guo-qiang1; 2
(1. Key Laboratory of Deep Petroleum Intelligent Exploration and Development, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China)
Keywords:
geophysics;  electromagnetic field;  3D forward modeling;  software development;  finite element;  CAD modeling;  mesh partitioning;  parallel computing
PACS:
P631.3+25; TP311.52
DOI:
10.19814/j.jese.2025.02026
Abstract:
Electromagnetic methods are essential for probing the Earth's interior. Forward modeling and simulation play a crucial role in understanding the mechanisms behind electromagnetic field responses, optimizing exploration strategies, and enhancing inversion processing and interpretation. Currently, the research on various electromagnetic forward modeling algorithms is flourishing, leading to the emergence of numerous open-source programs. However, these tools are often limited to a single program level, and the critical areas such as model construction, mesh generation, and post-processing visualization, frequent switching to external software are often necessary, which increase operational complexity and time costs. To address this, a geophysical electromagnetic field 3D forward modeling simulation software system, called EMSIM, is developed. This software implements forward modeling of geophysical electromagnetic fields in 3D space based on the finite element method, and includes full-process functions such as geometric modeling, mesh generation, analysis and solving, visualization, and data management. During the software development process, the key technical challenges are addressed, including complex model modeling and meshing, parallel computing optimization, efficient management of large-scale computational data, and post-processing visualization, significantly improving the accuracy and efficiency of simulation calculations. Through comparative validation with multiple cases, EMSIM meets the practical application needs in terms of operational performance, computational accuracy, and efficiency, and can serve as a powerful tool for the research on geophysical electromagnetics.

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Last Update: 2025-10-01