Numerical modelling of magnetic shielding by a cylindrical ferrofluid layer. (English) Zbl 1473.35530
Summary: A coupled method of finite differences and boundary elements is applied to solve a nonlinear transmission problem of magnetostatics. The problem describes an interaction of a uniform magnetic field with a cylindrical ferrofluid layer. Ferrofluid magnetisations, based on expansions over the Langevin law, are considered to model ferrofluids with a different concentration of ferroparticles. The shielding effectiveness factor of the cylindrical thick-walled ferrofluid layer is calculated depending on intensities of the uniform magnetic field and on thickness of the ferrofluid layer.
MSC:
| 35Q60 | PDEs in connection with optics and electromagnetic theory |
| 65N06 | Finite difference methods for boundary value problems involving PDEs |
| 65N38 | Boundary element methods for boundary value problems involving PDEs |
Keywords:
transmission magnetostatics problem; finite difference method; boundary element method; magnetic fluid; shieldingReferences:
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