空気の自然対流に及ぼす磁場の影響

概要

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Magnetic field effects on airflow were calculated. This calculation is important with regard to safety analysis when a serious accident like LOVA (Loss Of Vacuum Accident) occurs in a magnetic fusion device. In the calculation, air behavior is assumed as natural convection. The two dimensional incompressible fluid code of HSMAC with second accuracy of space and time was used in this study. Spatial profile of the magnetic field was assumed as 1/R dependent like the toroidal magnetic field of the tokamak machine. The center field strength of 5 T and 10 T were assumed. The results of the analysis with gross mesh (45 × 45 size) showed that natural convection was affected by the magnetic field, even though the force due to the magnetic field was not so large compared with atmospheric pressure. Consequently, simple airflow was calculated in this paper. Therefore, the effects of magnetic fields during serious accidents will be the next problem to solve in the near future due to complex flow and it's effect on chemical reactions.
社団法人プラズマ・核融合学会の論文
2000-08-25