High-temperature superconductors (HTS) have the potential to enable magnetic fields beyond the current limits of low-temperature superconductors in applications like accelerator magnets. However, the design of HTS-based magnets requires computationally demanding transient multi-physics simulations with highly non-linear material properties. To reduce the solution time, we propose using Parareal (PR) for parallel-in-time magneto-thermal simulation of magnets based on HTS, particularly, no-insulation coils without turn-to-turn insulation. We propose extending the classical PR method to automatically find a time partitioning using a first coarse adaptive propagator. The proposed PR method is shown to reduce the computing time when fine engineering tolerances are required despite the highly nonlinear character of the problem. The full software stack used is open-source.
@article{arxiv.2404.13333,
title = {Parallel-in-Time Integration of Transient Phenomena in No-Insulation Superconducting Coils Using Parareal},
author = {Erik Schnaubelt and Mariusz Wozniak and Julien Dular and Idoia Cortes Garcia and Arjan Verweij and Sebastian Schöps},
journal= {arXiv preprint arXiv:2404.13333},
year = {2024}
}
Comments
Pre-submission version (preprint). Presented at and submitted to the proceedings of "The 15th International Conference on Scientific Computing in Electrical Engineering" (SCEE 2024), March 4-8, 2024, Darmstadt, Germany