Collect. Czech. Chem. Commun. 1993, 58, 961-982

Free-Fall of Solid Particles through Fluids

Miroslav Hartmana and John G. Yatesb

a Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02 Prague 6-Suchdol, Czech Republic
b Department of Chemical and Biochemical Engineering, University College London, London WC1E7JE, England


A comprehensive, up-to-date review is presented of predictive relationships for the terminal, free-fall velocity of solid particles falling in an infinite Newtonian fluid. The study explores accuracy of the implicit and explicit equations in terms of the drag coefficient and the terminal velocity. Problems of predicting the terminal velocity of non-spherical, isometric as well as non-isometric, particles is discussed.