Physical aspect of flocculation process—I: Fundamental treatise

The Effect of Impeller Type on Floc Size and Structure during Shear-Induced Flocculation

“…6 is seen in Fig. 7: the largest flocs are produced by the fluid law function, similar to the relationships found between floc size and the average shear rate, G ( 8 ) . It should be foil, followed by the 4-blade and the Rushton.…”

Modeling spatial distribution of floc size in turbulent processes using the quadrature method of moment and computational fluid dynamics

“…In Figs. 3a and b, the results confirm experimental observation that the floc growth rate increases with increasing (G m ) while average floc size decreases with increasing (G m ) due to higher breakup rates (Parker et al, 1972;Tambo and Wanatabe, 1979;Oles, 1992;Spicer and Pratsinis, 1996a,b;Selomulya et al, 2001;Hopkins and Ducoste, 2003). In Fig.…”

Turbulence in flocculators: Effects of tank size and impeller type

“…Some researchers may argue that the difference between the turbulent fluctuating velocities across the aggregate diameter and the local energy-dissipation rate are related to each other if local isotropic conditions exist (Delichatsios and Probstein, 1975;Tambo and Watanabe, 1979;Glasgow and Hsu, 1979;Kusters, 1991). Batchelor (19531, Tennekes and Lumley (19721, and Hinze (1973) mentioned that when the Reynolds number is large, the small-scale structure of turbulence tends to be independent of any orientation effects introduced by the large-scale motion.…”