磁気ビーズ法を基礎とした磁性粉粒体の磁場・流体連成解析

抄録

In this paper, we report a magnetic-fluid coupling analysis method for magnetic granules based on the Magnetic Beads Method (MBM). The MBM enables analysis of the magnetic interaction between the magnetic granules without spatial discretization. By combining the particle dynamics method and the free surface flow analysis method, analysis of the magnetic granules behavior in fluid under an external magnetic field has been achieved. A magnet separator is used in machine tools such as grinding machines to recover fine magnetic granules from a coolant fluid. We performed three dimensional magnetic field-fluid coupling analysis of the magnetic separator. The result has confirmed that the magnetic granules contained in the fluid stick to a drum surface by a magnetic field produced by permanent magnets. The number of magnetic granules sticking to the drum increased as the granule diameter increases. A recovery rate of the magnetic granules was in good agreement with experimental.