Back to Search
Start Over
Fast and efficient critical state modelling of field-cooled bulk high-temperature superconductors using a backward computation method
- Source :
- Superconductor Science and Technology
- Publication Year :
- 2020
-
Abstract
- A backward computation method has been developed to accelerate modelling of the critical state magnetization current in a staggered-array bulk high-temperature superconducting (HTS) undulator. The key concept is as follows: i) a large magnetization current is first generated on the surface of the HTS bulks after rapid field-cooling (FC) magnetization; ii) the magnetization current then relaxes inwards step-by-step obeying the critical state model; iii) after tens of backward iterations the magnetization current reaches a steady state. The simulation results show excellent agreement with the H-formulation method for both the electromagnetic and electromagnetic-mechanical coupled analyses, but with significantly faster computation speed. Solving the FEA model with 1.8 million degrees of freedom (DOFs), the backward computation method takes less than 1.4 hours, an order of magnitude or higher faster than other state-of-the-art numerical methods. Finally, the models are used to investigate the influence of the mechanical stress on the distribution of the critical state magnetization current and the undulator field along the central axis.<br />12 pages, 7 figures
- Subjects :
- Paper
CompactLight
High-temperature superconductivity
Field (physics)
Computation
FOS: Physical sciences
Applied Physics (physics.app-ph)
01 natural sciences
Magnetization
law.invention
Superconductivity (cond-mat.supr-con)
ANSYS
law
0103 physical sciences
Materials Chemistry
media_common.cataloged_instance
Early career
Electrical and Electronic Engineering
European union
010306 general physics
media_common
Critical State Model
010302 applied physics
Physics
Condensed Matter - Superconductivity
HTS Modelling
Metals and Alloys
Backward Computation
Physics - Applied Physics
Undulator
Condensed Matter Physics
Focus on The Jan Evetts SUST Award 2020
Computational physics
Bulk Superconductors
Ceramics and Composites
H-formulation
Subjects
Details
- Language :
- English
- ISSN :
- 18820786, 09532048, and 10518223
- Database :
- OpenAIRE
- Journal :
- Superconductor Science and Technology
- Accession number :
- edsair.doi.dedup.....2be1a689892cc7de7e0094467473bd05