Analytical method for determining critical energies of uncooled superconductors based on the hyperbolic model of heat conduction
✍ Scribed by M. Lewandowska; L. Malinowski
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 147 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
The paper presents an analytical method for calculation of critical energies of uncooled composite superconductors based on the hyperbolic equation of heat conduction. The mathematical model developed takes into account: the ®nite speed of heat transport, the temperature dependence of the ohmic heat generation, the ®nite duration and the ®nite length of thermal disturbances. The thermophysical parameters of the conductor are assumed constant. Critical energies are determined by the analysis of variation of the maximum temperature in the normal zone with time. The results obtained are compared with those predicted by the related model based on the classical parabolic equation of heat conduction. The dierences are not large but they can be substantial especially in the case of high current density devices.