Pages 363-364
Free-fall motions of a single sphere near various walls are investigated in detail in order to discuss the hydrodynamic interactions of two spheres. The superposition method of Oseen's flow is improved to satisfy the boundary conditions of various walls. When the distance between the shpere and the various walls is more than 1.0 times the sphere diameter, the numerical results obtained by using the improved superposition method of Oseen's flow field agree well with the experimental results, The Oseen's collcation method using the higher order solution to Oseen's equation is newly constructed. When the distance between two spheres is more then 1.5 times the sphere diameter, the numerical results obtained by using the newly constructed collocation method agree well with the experimental results.
