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A new module, Pancake3D, of the open-source Finite Element Quench Simulator(FiQuS) has been developed in order to perform transient simulations ofno-insulation (NI) high-temperature superconducting (HTS) pancake coils in3-dimensions. FiQuS/Pancake3D can perform magnetodynamic or coupledmagneto-thermal simulations. Thanks to the use of thin shell approximations, an$\vec{H}-\phi$ formulation, and anisotropic homogenization techniques, eachturn can be resolved on the mesh level in an efficient and robust manner.FiQuS/Pancake3D relies on pre-formulated finite-element (FE) formulations andnumerical approaches that are programmatically adjusted based on a text inputfile. In this paper, the functionalities and capabilities of FiQuS/Pancake3Dare presented. The challenges of FE simulation of NI coils and howFiQuS/Pancake3D addresses them are explained. To highlight the functionalities,the results of a magneto-thermal analysis of a double pancake coil with 40turns per pancake with local degradation of the critical current density areconducted and discussed. Furthermore, a parameter sweep of the size of thislocal degradation is presented. All the FiQuS input files for reproducing thesimulations are provided.

An Open-Source 3D FE Quench Simulation Tool for No-Insulation HTS Pancake Coils