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## Quick start
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To run the model, open `magnus.pro` with Gmsh
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To run the model, open `magnets.pro` with Gmsh
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and click on the "Run" button in the left panel.
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## Features addressed in this tutorial
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This rather didactic tutorial solves the electromagnetic field
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and the rigid-body forces acting on a set of magnetic pieces
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of parallelepipedic or cylindrical shape.
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The tutorial model proposes the both dual 3D magnetostatic formulations:
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The tutorial model proposes both dual 3D magnetostatic formulations:
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the magnetic vector potential formulation with spanning-tree gauging,
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and the scalar magnetic potential formulation.
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As in tutorial 2 (magnetostatic field of an electromagnet), a shell
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As in tutorial 2 (magnetostatic field of an electromagnet), a shell
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of so-called infinite elements is used here to impose the exact
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zero-field boundary condition at infinity.
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The preferred way to compute electromagnetic forces in GetDP
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is as an explicit by-product of the Maxwell stress tensor.
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## References
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