Research on the Motion of Solid Particles in a Hydrocyclone

Abstract By using a new type of laser surveying instrument named the particle dynamics analyzer, the radial and axial velocity components and the size and concentration of solid particles at selected positions within a transparent hydrocyclone were measured directly, and profiles of the solid particle flow field were obtained. Some new observations were made, such as that the maximum concentration was at the loci of zero vertical velocity, and there was separation of some particles in the inner helical flow.