Analytic models of heterogenous magnetic fields for liquid metal flow simulations

Details Analytic models of heterogenous magnetic fields for liquid metal flow simulations Analytic models of heterogenous magnetic fields for liquid metal flow simulations

2009-01-06

arxiv.org/abs/0901.0624v2

Theor. Comput. Fluid Dyn. (2009) 23:571\^a?"578

Physics

Fluid Dynamics

8 pages, 4 figures, accepted to TCFD;

Scientific paper

10.1007/s00162-009-0114-9

A physically consistent approach is considered for defining an external magnetic field as needed in computational fluid dynamics problems involving magnetohydrodynamics (MHD). The approach results in simple analytical formulae that can be used in numerical studies where an inhomogeneous magnetic field influences a liquid metal flow. The resulting magnetic field is divergence and curl-free, and contains two components and parameters to vary. As an illustration, the following examples are considered: peakwise, stepwise, shelfwise inhomogeneous magnetic fields, and the field induced by a solenoid. Finally, the impact of the streamwise magnetic field component is shown qualitatively to be significant for rapidly changing fields.

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