Determine the diameter d of one of the differential-pressure (volumetric)flow rate measurement devices: nozzle; when through a 0.06 m inner diameter horizontal pipe, ethanol is flowing at a volumetric flow rate of 0.003 m^3/s

The pressure drop for each case is = 4.0KPa

(= P1 - P2)

Vol. flow rate = 0.003 m^3/s = 3x10^(-3) m^3/s

Properties of ethanol (from tables, at standard conditions):

density (ethanol) = 789.0 Kg/m^3 or 7.89x10^2 Kg/m

viscosity (absolute) Methanol = 1.20x10^(-3)N.s/ m^2

It will be solved by a trial and error procedure. For the nozzle, for the first iteration, assume a

C(n) value of = 0.97 and