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Abstract <p>The&#xa0;effectiveness of the physics-simulation software COMSOL Multiphysics has been discussed in the present article&#xa0;in terms of simulating any geological structure. Initially, it is used to model simple homogeneous and heterogeneous isotropic structures, where both the electrical potential surface and contour plots act as an intuitive validation. Later, sensitivity analysis has been performed on both isotropic and anisotropic homogeneous media, and is compared with pre-published results in order to assess the accuracy of COMSOL with respect to available codes. While attempting to conduct the sensitivity analysis in COMSOL, the general equation of sensitivity has been reduced to a COMSOL-compatible equation, which can be used for computing sensitivity for both isotropic and anisotropic homogeneous media. Finally, it has been used to synthetically model a 3-layered structure, which is both inhomogeneous and anisotropic in nature, and to numerically calculate its response.</p> Research highlights <p><UnorderedList Mark="Bullet"> <ItemContent> <p>The manuscript emphasizes on effectiveness of COMSOL Multiphysics in electrical anisotropy modelling.</p> </ItemContent> <ItemContent> <p>This manuscript also depicts results of sensitivity analysis in an anisotropic medium.</p> </ItemContent> <ItemContent> <p>The modelling results strongly presses upon the necessity of incorporating anisotropy in electrical resistivity data analysis.</p> </ItemContent> </UnorderedList></p>

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Three-dimensional anisotropic modelling of electrical resistivity: a feasibility study in COMSOL application

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Subhrajit Ghosh,
  • Sudha Agrahari,
  • William Kumar Mohanty

摘要

Abstract

The effectiveness of the physics-simulation software COMSOL Multiphysics has been discussed in the present article in terms of simulating any geological structure. Initially, it is used to model simple homogeneous and heterogeneous isotropic structures, where both the electrical potential surface and contour plots act as an intuitive validation. Later, sensitivity analysis has been performed on both isotropic and anisotropic homogeneous media, and is compared with pre-published results in order to assess the accuracy of COMSOL with respect to available codes. While attempting to conduct the sensitivity analysis in COMSOL, the general equation of sensitivity has been reduced to a COMSOL-compatible equation, which can be used for computing sensitivity for both isotropic and anisotropic homogeneous media. Finally, it has been used to synthetically model a 3-layered structure, which is both inhomogeneous and anisotropic in nature, and to numerically calculate its response.

Research highlights

The manuscript emphasizes on effectiveness of COMSOL Multiphysics in electrical anisotropy modelling.

This manuscript also depicts results of sensitivity analysis in an anisotropic medium.

The modelling results strongly presses upon the necessity of incorporating anisotropy in electrical resistivity data analysis.