Finite-Element Simulations of Field and Current Distributions in Multifilamentary Superconducting Films (Postprint)

Abstract

We present a finite-element model for computing current and field distributions in multifilamentary superconducting thin films subjected to simultaneous effects of a transport ac current and a perpendicularly applied dc field. The model is implemented in the finite-element software package COMSOL Multiphysics and this solves Maxwell equations using a highly nonlinear resistivity to describe electrical superconducting characteristics. The time-dependent magnetic flux, current distributions, and ac losses are studied for different distances between filaments. We find that increasing the interfilamentary distance affects the transport and screening current distributions, reducing both the magnetic coupling and ac losses.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2010
Accession Number
ADA520769

Entities

People

  • Andrea Lucarelli
  • Francesco Grilli
  • Gunter Lüpke
  • Paul N. Barnes
  • Timothy J. Haugan

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Couplings
  • Current Density
  • Electric Fields
  • Electromagnetic Fields
  • Equations
  • Filaments
  • Films
  • Magnetic Fields
  • Magnetic Flux
  • Materials
  • Mathematics
  • Simulations
  • Superconductors
  • Thin Films
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Plasma Physics / Magnetohydrodynamics
  • Superconducting Magnet Technology