Svarovsky model, hydrocyclones

Gravity and centrifugal sedimentation can be combined for the same sample in order to directly determine Stokes diameter for a wide range of particle sizes. In such a way conversion are avoided and a mass distributions, applicable to processes where gravimetric efficiencies are relevant, can be properly derived. Ortega-Rivas and Svarovsky (1994) determined particle sizes distributions of fines powders using a combined Andreasen Pipette-pipette centrifuge method. They derive relations useful to model hydrocyclone separations, which were later employed to describe apple juice clarification. 

Svarovsky L. A critical review of hydrocyclone models. In D Claxton, L Svarovsky, M Thew, eds. Hydrocyclyones 96. London Mech Eng Publi, 1996. 

There are numerous studies of hydrocyclone performance relating cut size, pressure drop and flow rate many involve the application of enq)irical constants in the theoretical models already discussed. The constants are strictly vahd only for the hydrocyclone geometry tested and operating conditions used, notably feed concentration. The situation is further complicated when the proposed equations are dimensionally inconsistent in the absence of empirical dimensioned constants. Some of the more well known equations are due to Bradley [1965], Holland-Batt [1982], Plitt Kawatra [1979], Reitema [1961] and Trawinsld [1969], These have been reviewed and compared in the book by Svarovsky [1984]. 

Rajamani, R. K. and Milin, L., Fluid flow model of the hydrocyclone for concentrated slurry classification , in L. Svarovsky and M. T. Thew (Eds), Hydrocyclones, Analysis and Applications, Kluwer Academic Publishers, Dordrecht, 95-108 (1992)... 

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