Dr. Steve Rapp, 2005

Pressure loss due to pipe friction

Dp
= pressure loss (Pa)

d =
pipe diameter (m)

f =
friction factor (dimensionless)

r
= fluid density (kg/m3)

L =
pipe length (m)

v =
fluid velocity (m/s)

(1) Show equation is dimensionally
homogeneous

(2) Find D p (Pa) for

d = 2
in, f = 0.02, r = 1 g/cm3, L = 20
ft, & v = 200 ft/min