Meshless IEFGM‐Based Numerical Modeling of Grounding Systems With Counterpoise Wires.
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| Title: | Meshless IEFGM‐Based Numerical Modeling of Grounding Systems With Counterpoise Wires. |
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| Authors: | Resende, Ursula C.1 (AUTHOR) resendeursula@cefetmg.br, Vieira, Jean L. M.1 (AUTHOR), Amorim, Victor G. L. C.1 (AUTHOR) |
| Source: | International Journal of Numerical Modelling. Jan/Feb2026, Vol. 39 Issue 1, p1-9. 9p. |
| Subjects: | Electric current grounding, Numerical solutions to boundary value problems, Iterative methods (Mathematics), Electric transients, Computer simulation, Earth resistance (Geophysics) |
| Abstract: | This paper presents a comprehensive numerical analysis of a counterpoise grounding wire subjected to low‐frequency surge currents, employing the Interpolating Element‐Free Galerkin Method (IEFGM). The analysis involves significant challenges arising from the high ratio between the conductor length and its radius—which demands fine spatial resolution—and from the asymmetric current injection, which requires a three‐dimensional representation over an extensive computational domain. To address these issues, the domain is reduced through the application of artificial boundary conditions with prescribed electric potentials, alongside an optimized distribution of nodes and Gauss integration points. Furthermore, a tailored mathematical formulation is proposed to incorporate the surge current directly into the model, enhancing the physical fidelity of the simulation. The IEFGM proves well suited for this task, offering numerical stability, consistent convergence behavior, and the flexibility to handle complex three‐dimensional geometries. Validation is carried out by comparing the computed grounding resistance with analytical approach, and a detailed convergence study investigates the influence of domain size, nodal spacing, and integration parameters. The results confirm the robustness and accuracy of the proposed methodology. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Numerical Modelling is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 191655753 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Meshless IEFGM‐Based Numerical Modeling of Grounding Systems With Counterpoise Wires. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Resende%2C+Ursula+C%2E%22">Resende, Ursula C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> resendeursula@cefetmg.br</i><br /><searchLink fieldCode="AR" term="%22Vieira%2C+Jean+L%2E+M%2E%22">Vieira, Jean L. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Amorim%2C+Victor+G%2E+L%2E+C%2E%22">Amorim, Victor G. L. C.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Numerical+Modelling%22">International Journal of Numerical Modelling</searchLink>. Jan/Feb2026, Vol. 39 Issue 1, p1-9. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Electric+current+grounding%22">Electric current grounding</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+solutions+to+boundary+value+problems%22">Numerical solutions to boundary value problems</searchLink><br /><searchLink fieldCode="DE" term="%22Iterative+methods+%28Mathematics%29%22">Iterative methods (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+transients%22">Electric transients</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+resistance+%28Geophysics%29%22">Earth resistance (Geophysics)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents a comprehensive numerical analysis of a counterpoise grounding wire subjected to low‐frequency surge currents, employing the Interpolating Element‐Free Galerkin Method (IEFGM). The analysis involves significant challenges arising from the high ratio between the conductor length and its radius—which demands fine spatial resolution—and from the asymmetric current injection, which requires a three‐dimensional representation over an extensive computational domain. To address these issues, the domain is reduced through the application of artificial boundary conditions with prescribed electric potentials, alongside an optimized distribution of nodes and Gauss integration points. Furthermore, a tailored mathematical formulation is proposed to incorporate the surge current directly into the model, enhancing the physical fidelity of the simulation. The IEFGM proves well suited for this task, offering numerical stability, consistent convergence behavior, and the flexibility to handle complex three‐dimensional geometries. Validation is carried out by comparing the computed grounding resistance with analytical approach, and a detailed convergence study investigates the influence of domain size, nodal spacing, and integration parameters. The results confirm the robustness and accuracy of the proposed methodology. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Numerical Modelling is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/jnm.70150 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1 Subjects: – SubjectFull: Electric current grounding Type: general – SubjectFull: Numerical solutions to boundary value problems Type: general – SubjectFull: Iterative methods (Mathematics) Type: general – SubjectFull: Electric transients Type: general – SubjectFull: Computer simulation Type: general – SubjectFull: Earth resistance (Geophysics) Type: general Titles: – TitleFull: Meshless IEFGM‐Based Numerical Modeling of Grounding Systems With Counterpoise Wires. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Resende, Ursula C. – PersonEntity: Name: NameFull: Vieira, Jean L. M. – PersonEntity: Name: NameFull: Amorim, Victor G. L. C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan/Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 08943370 Numbering: – Type: volume Value: 39 – Type: issue Value: 1 Titles: – TitleFull: International Journal of Numerical Modelling Type: main |
| ResultId | 1 |
