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15.04.2024 | Original Article

Element-free Galerkin analysis of MHD duct flow problems at arbitrary and high Hartmann numbers

verfasst von: Xiaolin Li, Shuling Li

Erschienen in: Engineering with Computers | Ausgabe 5/2024

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Abstract

A stabilized element-free Galerkin (EFG) method is proposed in this paper for numerical analysis of the generalized steady MHD duct flow problems at arbitrary and high Hartmann numbers up to \(10^{16}\). Computational formulas of the EFG method for MHD duct flows are derived by using Nitsche’s technique to facilitate the implementation of Dirichlet boundary conditions. The reproducing kernel gradient smoothing integration technique is incorporated into the EFG method to accelerate the solution procedure impaired by Gauss quadrature rules. A stabilized Nitsche-type EFG weak formulation of MHD duct flows is devised to enhance the performance damaged by high Hartmann numbers. Several benchmark MHD duct flow problems are solved to testify the stability and the accuracy of the present EFG method. Numerical results show that the range of the Hartmann number Ha in the present EFG method is \(1\le Ha\le 10^{16}\), which is much larger than that in existing numerical methods.

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Metadaten
Titel
Element-free Galerkin analysis of MHD duct flow problems at arbitrary and high Hartmann numbers
verfasst von
Xiaolin Li
Shuling Li
Publikationsdatum
15.04.2024
Verlag
Springer London
Erschienen in
Engineering with Computers / Ausgabe 5/2024
Print ISSN: 0177-0667
Elektronische ISSN: 1435-5663
DOI
https://doi.org/10.1007/s00366-024-01969-1