(SSL Module Only) The following data are required for the Minimal Calculation Method

• Temperature

• Solids concentration

• Density

• Sliding friction coefficient, μs

Horizontal Pipes

The pressure drop in a given by the relationship given by Wilson, et al, 2006Wilson, K.C., G.R. Addie, A. Sellgren and R. Clift, Slurry Transport Using Centrifugal Pumps, 3rd Ed., published by Springer, 2006., on page 116. The coefficient 0.55 is based on sand or gravel sliding in steel pipe which has a coefficient of sliding friction, μs of 0.40. The equation then is modified with the ratio of the value entered in the Solids Definition panel and becomes the following:

(1)

Note that when the Minimal Input option is selected in the Solids Definition panel there is no value entered for the d50 or d85 particle sizes and therefore the M exponent, V50 and other parameters cannot be determined.