【摘要】 采用磁性液体边界元数值模型分析了磁性粒子微结构磁化状态及相互作用,并与相应的有限元数值结果进行比较.结果表明:虽然粒子边界层附近的磁场分布出现了一定的模糊,且变化幅度明显高于有限元结果,但在粒子边界层以外的其它区域两种数值解法具有高度一致性;当粒子边界元节点数较小时,磁力相互作用边界元结果与有限元结果相差较大,且很不稳定;随着节点数增加,边界元结果逐渐趋近于有限元虚功原理的磁力数值结果,并达到一个较稳定的量值.结果清晰地反映出边界元数值方法在磁性液体多体动力学模拟研究中的一些基本特征.更多还原

【Abstract】 A boundary element model for particle dynamics simulation of magnetic fluids in magnetic fields is employed to calculate the field distributions and interactions in a particulate system.Compared with the finite element method,the boundary element method calculates sharper and more variable boundary area of particles.In the area other than boundary areas,the two methods show good agreement.With increasing node numbers,the magnetic force obtained by the boundary element method closes to the virtual force obtained by the finite element method.更多还原