SIMULATION OF ELECTROMAGNETIC AND THERMAL PROCESSES IN SUPERCONDUCTING SYSTEMS
Journal Title: Proceedings of Electrotechnical Institute Prace Instytutu Elektrotechniki - Year 2012, Vol 59, Issue 259
Abstract
This article presents a description and method of simulation of electromagnetic and thermal processes in superconducting tapes and bulk samples. Peculiarity phenomena in superconductors, resulting i.a. in a rapid, nonlinear changes in electrical and thermal properties, complicates the description of the model. The complex process of heat transfer to the coolant is an additional difficulty. The implementation of two-dimensional superconductor model, allowing dynamic analysis of electromagnetic and associated thermal processes, was the objective of this work. The nature of the transition to normal state was described by the E-J power law. A magnetic field H was assumed as the dependent variable in the model. This assumption allows the calculation of the electric field E from the E-J dependence and the value of magnetic field H, simplifies the formulation of boundary conditions as well as reduces the higher-order derivatives and the computation time. The additional feature of the presented model is the taking into account the nonlinear heat transfer from superconductor to the coolant and rapid changes in heat transfer coefficient h, resulting from the boiling crisis.
Authors and Affiliations
Marcin LEBIODA, Jacek RYMASZEWSKI
Keywords
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