Two-dimensional finite element mesh generation algorithm for electromagnetic field calculation*

Zhang, Chunfeng; Wang, Wei; An, Si-Guang; Shentu, Nanying

doi:10.1088/1674-1056/abaedf

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Reference [35] sets each edge to have a l ij = [p i , p j ] variable spring constant f (p i , p j ), which depends on the current length of the mesh element edge ||l ij || and the desired ideal length e ij . By adopting the concept of normalized length and defining s ij = ||l ij ||/e ij , the force balance function f can be expressed as:…”

Section: ( )mentioning

confidence: 99%

A Novel Meshing Method Based on Adaptive Size Function and Moving Mesh for Electromagnetic Finite Element Analysis

Zhang

Wang

et al. 2021

Symmetry

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A moving meshing algorithm with mesh adaptive size function was proposed in this paper with regard to the modeling speed and solution accuracy of electromagnetic equipment in the optimization design process. In the proposed method, a mesh size function that considers curvature, feature size, and distance gradient restrictions is constructed, which can obtain high quality meshes and avoid excessive iteration; when the finite element mesh domain is deformed, only the mesh nodes close to the moving boundary are allowed to move, and the theory of force-balance is used combined with the second-order boundary projection algorithm to perform iterative optimization of the mesh node positions. The proposed method has the advantages of keeping the original mesh structure and minimum mesh deformation as well as speed up the convergence, save time in the finite element meshing, and ensure the quality of the generated mesh. Then, the proposed method was applied to a 37 kw motor for electromagnetic analysis, and the results obtained proved the accuracy of the algorithm; finally, the effectiveness of the mesh movement algorithm in three-dimensional space was tested by moving the sphere inside the cylinder.

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Section: ( )mentioning

confidence: 99%

A Novel Meshing Method Based on Adaptive Size Function and Moving Mesh for Electromagnetic Finite Element Analysis

Zhang

Wang

et al. 2021

Symmetry

Self Cite

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“…2. Compared with analytical algorithms, numerical algorithms, including the finite-difference time-domain (FDTD) method [23,26,27] and the finite-element method (FEM), [23,[27][28][29] can theoretically solve for arbitrary regions. Measuring a dielectric requires high accuracy; however, it demands numerical algorithms to disperse too many meshes, leading to long computation times [14,23,24,30] that are impractical.…”

Section: Introductionmentioning

confidence: 99%

Application of the body of revolution finite-element method in a re-entrant cavity for fast and accurate dielectric parameter measurements

Feng

et al. 2023

Chinese Phys. B

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In dielectrometry application, traditional analytical and numerical algorithms are hardly employed in complex resonant cavities. For a special kind of structure (rotating resonant cavity), the BOR-FEM is well employed to calculate the resonant parameters and dielectric parameters. In this paper, several typical resonant structures are selected for analysis and verification. Compared with the resonance parameter values in the literature and the simulation results of commercial software, the error of the BOR-FEM calculation is less than 0.9% and the solution time of a single time is less than 1s. The reentrant coaxial resonant cavities loaded with dielectric materials were analyzed using this method and compared with the simulation results, which showed a high accuracy. Finally, in this paper, the machined cavity with the established BOR-FEM method is successfully applied to the accurate measurement of the complex dielectric constant of dielectric materials. The test specimens were machined from PTFE, fused silica and Al2O3, and the test results showed good agreement with the literature reference values.

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Dynamic modeling of grounding device impact characteristics considering coupling of river seepage, water velocity and current dispersion

Li,

Zhu,

Bao

et al. 2024

Electr Eng

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Two-dimensional finite element mesh generation algorithm for electromagnetic field calculation*

Cited by 3 publications

References 23 publications

A Novel Meshing Method Based on Adaptive Size Function and Moving Mesh for Electromagnetic Finite Element Analysis

A Novel Meshing Method Based on Adaptive Size Function and Moving Mesh for Electromagnetic Finite Element Analysis

Application of the body of revolution finite-element method in a re-entrant cavity for fast and accurate dielectric parameter measurements

Dynamic modeling of grounding device impact characteristics considering coupling of river seepage, water velocity and current dispersion

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