INTRODUCTION
P
REVIOUS research has verified results that sphere particles of magnetic fluid (MF) are aggregated in a chain cluster. We can deal with his aggregation as the index of the number of aggregated particles, appearing as a prorate spheroid [1]. Previous investigations of the aggregation confirmed that the sphere particles were distributed nonuniformaly according to the distribution of an applied nonunoform magnetic field[2].Namely, there is a nonuniform distribution of mass concentration of particles under a nonunifrom magnetic field.