ChE304Moody Friction Factor Chart

ü Moody Friction Factor Chart

Laminar Flow — f = 64 ê Re

Re =r d v

m=d v

nwhere Ó =

m

r

d — diameter; v — velocity; r — density;m — dynamic viscosity; n — kinematic viscosity

ü Turbulent flow get f from the chart or the Haaland equation.

ü Haaland Equation — Note: the Log is the natural log (ln)

f =1.63639

LogA0.234043 eod1.11 + 6.9Re

E2

ü TI - 89 Implementation where e is e/d and fre(v) is a Reynolds number function

Define fhf HvL = 1.63639 ê ln H0.234043 * e^1.11 + 6.9 ê fre HvLL^2