Simulation and Analysis of Time-Harmonic Electromagnetic Field Through Metal Casing

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Electronics Letters Pub Date : 2025-03-17 DOI:10.1049/ell2.70201

Bing Gao, Shuai Fu, Kai Zhao, Decheng Hong, Shouwen Yang

引用次数: 0

Abstract

In this paper, we present a stable analytical method to simulate the electromagnetic (EM) field through the casing. The expression of the EM field consists of the modified Bessel and Hankel functions that avoid the overflow problem in numerical integration. The numerical filter coefficient method of the fast cosine transform is adopted for the integral, which effectively improves the calculation speed on the premise of ensuring the calculation accuracy. As the foundation of the transient electromagnetic (TEM) logging method, we analyse the casing effect on the EM field with various transmitting frequencies. Numerical results show that the EM field over MHz will significantly decay through the casing.

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穿越金属外壳的时谐电磁场仿真与分析

本文提出了一种稳定解析法来模拟套管内的电磁场。电磁场的表达式由修正的Bessel和Hankel函数组成，避免了数值积分中的溢出问题。积分采用快速余弦变换的数值滤波系数法，在保证计算精度的前提下，有效地提高了计算速度。作为瞬变电磁测井方法的基础，分析了不同发射频率下套管对电磁场的影响。数值结果表明，在MHz范围内的电磁场会通过套管发生明显的衰减。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electronics Letters 工程技术-工程：电子与电气

CiteScore

2.70

自引率

0.00%

发文量

268

审稿时长

3.6 months

期刊介绍： Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews. Scope As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below. Antennas and Propagation Biomedical and Bioinspired Technologies, Signal Processing and Applications Control Engineering Electromagnetism: Theory, Materials and Devices Electronic Circuits and Systems Image, Video and Vision Processing and Applications Information, Computing and Communications Instrumentation and Measurement Microwave Technology Optical Communications Photonics and Opto-Electronics Power Electronics, Energy and Sustainability Radar, Sonar and Navigation Semiconductor Technology Signal Processing MIMO