the effect of the particle size distribution on non-newtonian turbulent ...

Chapter 2 Literature Review Page 2.31
A = 4f = f (Re) . (2.58)
This forms a relatively flat f-Re line. At higher values <strong>of</strong> Re all lines <strong>of</strong> equation 2.58
approach <strong>the</strong> curve described by <strong>the</strong> equation
A = 4f = 0,3164
R 0.25
e MR
(2.59)
Kemblowski & Kolodziejski (1973) compared <strong>the</strong>ir work extensively with <strong>the</strong> Dodge &
Metzner model and found that it did not accurately describe <strong>the</strong> behaviour <strong>of</strong> <strong>the</strong>se aqueous
kaolin suspensions. In fact <strong>the</strong>y found that <strong>the</strong> data lay on a relatively flat f-Re line between
<strong>the</strong> lines <strong>of</strong> equation 2.59 and <strong>the</strong> Dodge & Metzner prediction as can be seen in <strong>the</strong> figure
below (Figure 2.12).
Figure 2.12: Comparison <strong>of</strong> Dodge & Metzner prediction curve and Kemb10wski &
Kolodziejski experimental data for <strong>the</strong> flow <strong>of</strong> a 30% aqueous kaolin
suspension at n=0,39 (taken from Kemblowski & Kolodziejski, 1973)