A finite element algorithm for 3‐D transient electromagnetic modeling

2009 ◽  
Author(s):  
Evan S. Um ◽  
Jerry M. Harris ◽  
David L. Alumbaugh
Keyword(s):  
Finite Element ◽  
Electromagnetic Modeling ◽  
Transient Electromagnetic ◽  
Element Algorithm

2-D electromagnetic modeling by finite‐element method with a dipole source and topography

Geophysics ◽  
2000 ◽  
Vol 65 (2) ◽  
pp. 465-475 ◽  
Author(s):  
Yuji Mitsuhata
Keyword(s):  
Finite Element ◽  
Delta Function ◽  
Dipole Source ◽  
Electromagnetic Modeling ◽  
Secondary Field ◽  
Controlled Source ◽  
Transient Electromagnetic ◽  
Isoparametric Finite Element ◽  
Anomalous Bodies ◽  
Element Technique

I present a method for calculating frequency‐domain electromagnetic responses caused by a dipole source over a 2-D structure. In modeling controlled‐source electromagnetic data, it is usual to separate the electromagnetic field into a primary (background) and a secondary (scattered) field to avoid a source singularity, and only the secondary field caused by anomalous bodies is computed numerically. However, this conventional scheme is not effective for complex structures lacking a simple background structure. The present modeling method uses a pseudo‐delta function to distribute the dipole source current, and does not need the separation of the primary and the secondary field. In addition, the method employs an isoparametric finite‐element technique to represent realistic topography. Numerical experiments are used to validate the code. Finally, a simulation of a source overprint effect and the response of topography for the long‐offset transient electromagnetic and the controlled‐source magnetotelluric measurements is presented.

An Efficient Footprint-Guided Compact Finite Element Algorithm for 3-D Airborne Electromagnetic Modeling

2019 ◽  
Vol 16 (12) ◽  
pp. 1809-1813 ◽  
Author(s):  
Rong Liu ◽  
Rongwen Guo ◽  
Jianxin Liu ◽  
Zhuo Liu
Keyword(s):  
Finite Element ◽  
Electromagnetic Modeling ◽  
Airborne Electromagnetic ◽  
Element Algorithm

Mixed finite element algorithm for a nonlinear time fractional wave model

2021 ◽  
Vol 188 ◽  
pp. 60-76
Author(s):  
Jinfeng Wang ◽  
Baoli Yin ◽  
Yang Liu ◽  
Hong Li ◽  
Zhichao Fang
Keyword(s):  
Finite Element ◽  
Mixed Finite Element ◽  
Wave Model ◽  
Element Algorithm

scholarly journals Finite element modelling of transient electromagnetic fields near steel-cased wells

2015 ◽  
Vol 202 (2) ◽  
pp. 901-913 ◽  
Author(s):  
Evan Schankee Um ◽  
Michael Commer ◽  
Gregory A. Newman ◽  
G. Michael Hoversten
Keyword(s):  
Finite Element ◽  
Electromagnetic Fields ◽  
Finite Element Modelling ◽  
Element Modelling ◽  
Transient Electromagnetic

6/4 SRM electromagnetic modeling and control by using Finite element method

2021 ◽  
Author(s):  
Kassimi Youghourta ◽  
Guettaf Abderrazak ◽  
Ali Arif
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Modeling ◽  
Modeling And Control ◽  
And Control ◽  
Element Method

A Moving Mesh Finite Element Algorithm for Singular Problems in Two and Three Space Dimensions

2002 ◽  
Vol 177 (2) ◽  
pp. 365-393 ◽  
Author(s):  
Ruo Li ◽  
Tao Tang ◽  
Pingwen Zhang
Keyword(s):  
Finite Element ◽  
Moving Mesh ◽  
Singular Problems ◽  
Three Space ◽  
Element Algorithm
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