Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 07, 2017 - October 09, 2017
The Electromagnetic Flux Compression (EMFC) technique which is made from four coils, liner, primary, support and Helmholtz coils, is used to generate ultra-high magnetic field over 700 T inside a laboratory, and scientists use the ultra-high magnetic field generated with this technique to investigate electronic properties on novel materials. Scientists are focusing on the increase of generation of the magnetic field and have a plan to obtain the field over 1000 T with stability inside a laboratory. Recent advances of simulation techniques such as optimization techniques will play an important role in realizing the plan. In order to investigate effectiveness of the simulation technique for the purpose of combination with optimization technique, a two-dimensional axisymmetric electromagnetic simulation has been carried out on the EMFC technique in coupling with structural and thermal solvers. Time history of the magnetic field predicted by the axisymmetric solver shows almost the same tendency obtained by the three dimensional solver previously reported, while the diameter of the liner coil as a function of magnetic field slightly differs from an experimental result. As compared with the result previously reported, it is found that a gap of the primary coil is a major reason for the difference and that the difference is inevitable as long as the axisymmetric solver is employed. On the other hand, it is also found that calculation time of the method used in this study is drastically reduced by 1/10 or more than that of the three dimensional solver. Therefore, the simulation technique proposed in this study is considered valid.
