Comparison the iterative solvers for large sparse matrix in 3D electromagnetic forward modelling

Yongfei Wang; Rongwen Guo; Jianxin Liu; Hang Chen; Jian Li; Rong Liu

doi:10.1088/1755-1315/660/1/012066

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Comparison the iterative solvers for large sparse matrix in 3D electromagnetic forward modelling

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Comparison the iterative solvers for large sparse matrix in 3D electromagnetic forward modelling

Yongfei Wang, Rongwen Guo, Jianxin Liu, Hang Chen, Jian Li and Rong Liu

IOP conference series. Earth and environmental science, Vol.660(1), p.12066

02/01/2021

DOI: 10.1088/1755-1315/660/1/012066

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Abstract

In 3D electromagnetic (EM) forward modeling, an analytical solution is generally not available. Numerical solution is commonly applied to solve the forward modeling problems, mostly based on iterative solvers. The efficiency of EM forward modeling is critical for the development of practical inversion for EM data. The Krylov subspace solvers are widely used to solve frequency-domain EM forward modeling problems. However, these solvers converge remarkably more slowly as the operating period increases. This can be improved by the use of preconditioner and divergence correction. Multigrid (MG) solver is efficient for solving EM forward modelling problems without the use of preconditioner and divergence correction. In this paper, a MG solver is compared with Bi-Conjugate Gradients Stabilized (BCG) solvers with different preconditioners. They are compared, in terms of iteration number and computing time, indicating the MG solver is much more efficient.

Details

Title: Subtitle: Comparison the iterative solvers for large sparse matrix in 3D electromagnetic forward modelling
Creators: Yongfei Wang - Central South University
Rongwen Guo - Central South University
Jianxin Liu - Central South University
Hang Chen - Central South University
Jian Li - Central South University
Rong Liu - Central South University
Resource Type: Journal article
Publication Details: IOP conference series. Earth and environmental science, Vol.660(1), p.12066
DOI: 10.1088/1755-1315/660/1/012066
ISSN: 1755-1307
eISSN: 1755-1315
Publisher: IOP Publishing
Number of pages: 5
Alternative title: Comparison the iterative solvers for large sparse matrix in 3D electromagnetic forward modelling
Language: English
Date published: 02/01/2021
Academic Unit: Earth and Environmental Sciences
Record Identifier: 9984962533802771

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