Table of Contents
Physical Separation in Science and Engineering
Volume 13, Issue 3-4, Pages 101-118

Similarity Criteria for Processes of Gravitational Classification

1Department of Industrial Engineering, Sami Shamoon (formerly Negev), College of Engineering, Beer-Sheva, Israel
2Institutes for Applied Research, Ben-Gurion University of the Negev, Beer-Sheva, Israel

Received 17 August 2004; Revised 2 September 2004

Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Similarity criteria for processes such as gravitational separation of bulk materials are understood as relationships that make it possible to obtain universal curves of separation. For turbulent separation regimes, such criteria were determined earlier [E. Barsky and M. Barsky, Master Curve of Separation Processes. Phys. Sep. Sci. Engin., 13 (2004), 1–13; M.D. Barsky, Powder Fractionation, Moscow, Nedra, 1980 (in Russian)]. In the present article, on the basis of cascade and structural model, similarity criteria are developed, which make it possible to obtain universal curves of separation in all regimes of the motion of the medium. Their applicability is demonstrated on concrete experimental data.