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Effects of the consistency of the fringing magnetic field on direct numerical simulations of liquid–metal flow

Effects of the consistency of the fringing magnetic field on direct numerical simulations of liquid–metal flow,10.1016/j.fusengdes.2010.07.014,Fusion

Effects of the consistency of the fringing magnetic field on direct numerical simulations of liquid–metal flow   (Citations: 2)
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We investigate the effects of the consistency of strong fringing decreasing magnetic fields on numerical simulations of classical experimental data. Studies about fringing magnetic fields have attracted the attention of the fusion community in relation to the design of the liquid–metal flow blankets for fusion nuclear reactors. One-dimensional fitting functions neglecting magnetic field consistency have been adopted in previous numerical studies. Thanks to complete three-dimensional numerical simulations, the effect of the physical consistency of the magnetic field on fluid flow can now be assessed. We present a technique for generating discretely consistent magnetic fields based on classical one-dimensional fittings. With this method, key magnetic field features, such as the bending of the magnetic lines, are accurately reproduced and, therefore, the validity of the technique is established. Consistent and inconsistent magnetic fields have been tested under very strong decreasing magnetic fields with insulating and conducting walls using direct numerical simulations. The results show a moderate, but systematic, improvement of the predictions with respect to the experiments. As an example, the repeated under-prediction of the peak transverse pressure gradient, observed in the results of asymptotic methods and of direct numerical simulations, is explained by the historically neglected consistency of the fringing magnetic field.
Journal: Fusion Engineering and Design - FUSION ENG DES , vol. 86, no. 1, pp. 5-14, 2011
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    • ...More recently, Albets-Chico et al. [1] have also addressed this case by means of a complete numerical resolution of the governing equations (considering a quasi-static approximation for the induced magnetic field) when using a nodal-based non-structured finite-volume code...
    • ...Comparison is given for experimental results ([17], circles), 3D numerics with a non-consistent fringing magnetic field (dashed, [15]), and 3D numerics with a consistent magnetic field (solid, [1]) The results are clearly improved when the consistent magnetic field is considered...
    • ...Further details will be available soon in [1]...

    E. V. Votyakovet al. Analytic models of heterogenous magnetic fields for liquid metal flow ...

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