Superconducting wire

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 2D and 3D models of superconducting wires.

The model uses an H-formulation and the Gmsh cohomology solver [1][2]. The nonlinear resistivity $\rho=\frac{E_c}{J_c}(\frac{\|\vec{J}\|}{J_c})^{n-1}$ in the superconducting filaments is linearized as in [3]. The number and layers of superconducting filaments, the twist pitch as well as the radius of the conducting matrix are parametrizable, and the model can be solved both in 2D and in 3D.