Forward modeling of magnetotellurics using Comsol Multiphysics

Li, A.; Butler, S. L.

doi:10.1016/j.acags.2021.100073

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…Under the condition of limited measuring points, paying attention to important areas can save manpower and material costs while ensuring safety. A. Li et al [23] modeled the horizontal stratification of the earth. The solution obtained by the finite element tool was compared with the analytical solution.…”

Section: Rationality Verificationmentioning

confidence: 99%

Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage

Xiong,

Liu,

et al. 2024

Energies

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The distribution of renewable energy sources is geographically limited. In the process of long-distance transmission, the direct current flowing from a ground electrode into the ground will cause a higher step voltage, which will bring serious security risks to the surrounding industry and life. Accurate calculation of the complex soil electrical model around the grounding electrode is crucial for site selection. Existing simulation software like CDEGS results in significant errors, particularly in complex karst topography. Therefore, constructing a finite element model that accurately reflects the characteristics of geotechnical soil near the DC grounding electrode is an essential but unresolved problem. This paper establishes a soil electrical model for karst topography and explores the impact of cave-type caverns and underground rivers on the step voltage distribution of DC grounding electrodes. These research findings can guide the site selection of DC transmission projects in karst topography.

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Section: Rationality Verificationmentioning

confidence: 99%

Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage

Xiong,

Liu,

et al. 2024

Energies

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“…The creation of a finite element model is directly related to the speed and accuracy of the simulation. When 3D simulations in uniform full space are done, we consider using a spherical domain and two planes and the work plane function, for splitting out the upper air region and the two lower ground regions, where the ground and air boundary conditions do not need to be set manually and can be automatically coupled within the system to meet the boundary conditions [7]. Since COMSOL cannot include a single conductor by setting boundary conditions in the time domain, the anomalous body must be of finite size.…”

Section: Geometric Construction and Parameter Settingmentioning

confidence: 99%

Simulation Analysis Based on COMSOL Helicopter Time-domain Aeromagnetic Method

Su,

Zhang,

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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This paper takes the time-domain aeromagnetic system as the research object and uses the finite element software COMSOL Multiphysics 6.0 to establish the three-dimensional system model. By comparing the COMSOL Multiphysics forward simulation solution with the one-dimensional numerical solution, it verifies that the COMSOL software meets the simulation accuracy requirements of the three-dimensional time-domain aeromagnetic method, and focuses on the analysis of the transient response at different flight altitudes is also analyzed. Based on the analysis of this paper, a set of aeromagnetic parameters with high detection capability is determined for engineering practice, and a test of the system is completed.

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“…In this study, COMSOL Multiphysics [13] was used to draw a 1000 L giant electrostatic collection vessel, and the potential and electric field distributions in the vessel were simulated. The simulation experiments found that setting a grid in the electrostatic collection vessel can reduce the collection time of the positively charged Po-218 ions, hence increasing the radon monitor's collection efficiency and sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Design of multi-layer grid in a giant electrostatic collection vessel of ultra-high sensitivity radon monitor

Tang

Fan

et al. 2022

J. Inst.

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Developing an ultra-high sensitivity electrostatic collection radon monitor benefits the scientific experiments of China Jinping Underground Laboratory. Here, a one cubic meter electrostatic collection vessel with a multi-layer hemispherical metal grid was designed to increase the collection efficiency of positively charged Po-218 ions. The 3D model of the giant electrostatic collection vessel was constructed using the COMSOL Multiphysics simulation software, and the potential and electric field distributions in the vessel were simulated. Numerical simulation results were obtained according to the different radii and voltages applied to the grid. The electric field between the vessel wall and grid, between two grids, and between the grid and surface of the PIPS detector must be set uniformly to reduce the collection time of the positively charged Po-218 ions. Simulation results showed that setting a charged metal grid in the vessel can optimize the electric field distribution, and setting a two-layer charged metal grid in the giant vessel can further increase the cost performance. The average collection times of the electrostatic collection vessel with the two-layer grid along the vertical and oblique lines approximately 15% and 13% of that without the grid. The rates of positively charged Po-218 ions that could pass through the one and two-layer metal grids were 86.78% and 50%. Optimizing the electric field can greatly increase the sensitivity of radon monitors and reduce the humidity restrictions.

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Forward modeling of magnetotellurics using Comsol Multiphysics

Cited by 8 publications

References 37 publications

Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage

Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage

Simulation Analysis Based on COMSOL Helicopter Time-domain Aeromagnetic Method

Design of multi-layer grid in a giant electrostatic collection vessel of ultra-high sensitivity radon monitor

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