Question

1. (20pts) Glycerin has a density of 2.46 slug/ft³, a viscosity of 0.02 lbf∙s/ft², and flows through a 10-in.-diameter pipe at 3 ft/s. The pipe is 20ft long.
   1. Based on its units, which viscosity was given, kinematic or dynamic?
   2. What is the Reynolds number? Is the flow laminar, turbulent, or transitional? Ans. Re≈300.
   3. What is the friction factor?
   4. What is the head loss in 20ft of pipe in units of feet? Ans. Approx. 0.7ft.

Answer 1

Friction factor comes out to be as 0.2133. The corresponding head loss in 20 ft length of the pipe comes out to be as 0.715 ft (nearly 0.7 ft,as mentioned in the problem)