Includes bibliographical references (leaves 35-36). Final report project no. A-019-ILL. February 15, 1967-June 30, 1969. March 1980.

Understanding the basic mechanisms and predicting the behavior of particles suspended in turbulent fluid flow are essential to environmental conservation and to multiphase system design.Air and water pollution, sedimentation and erosion of riverbeds and coastal shorelines, and atmospheric fallout are some of the areas in which particle suspensions are of key importance.Detailed experimental measurements of dilute particle suspensions have been performed which examined the effects of particle size, shape and relative density on the statistical response of such particles in a turbulent fluid.Shape was found to be of minor importance for spheres, cubes and tetrahedrons.However, size was found to be important when the particle dimension was as large or larger than the fluid turbulence structure.Relative density influenced both free fall and inertial effects.An analytical model was developed which included these latter effects.It agrees well with observed particle dispersion measurements.