Contribution à la modélisation 3D du champ électromagnétique dans les supraconducteurs à haute température critique

Abstract : Superconducting materials have particular physical and geometric properties that require spatial-temporal modeling approaches fines, where conventional methods quickly reach their limits in terms of convergence, precision and computational time. The latter can be very consistent, which is incompatible with the design and optimization problems. In this context, this work aims to develop rapid multiphysics modeling approaches for the design and optimization of superconductor-based systems. Particular attention is paid to the integral methods. Scientific obstacles to overcome, which also constitute the originality of the work lies in the integration of behavior laws E (J) of superconducting digital patterns of such methods. A numerical model is developed for a rapid computation of eddy currents in multifilamentary high temperature superconductive (HTS) for the evaluation of AC losses. The developed model is based on an integro-differential formulation in terms of the electric vector potential in the frequency and temporal domains. A test campaign is conducted to validate and clearly identify the possibilities and limitations of this approach for modeling superconductors.
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Mohamad Farhat. Contribution à la modélisation 3D du champ électromagnétique dans les supraconducteurs à haute température critique. Energie électrique. Université de Lorraine, 2019. Français. ⟨NNT : 2019LORR0083⟩. ⟨tel-02351551⟩

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