(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.
Based on its units, which viscosity was given, kinematic or
dynamic?
What is the Reynolds number? Is the flow laminar, turbulent, or
transitional? Ans. Re≈300.
What is the friction factor?
What is the head loss in 20ft of pipe in units of feet? Ans.
Approx. 0.7ft.
A milk truck carries milk with density 64.6 lb/ft3 in a
horizontal cylindrical tank with diameter 4 ft. (a) Find the force
exerted by the milk on one end of the tank when the tank is full.
(Round your answer to the nearest integer.) lb (b) What if the tank
is half full? (Round your answer to one decimal place.) lb.
A gas undergoes a process from state 1, where
p1 = 60 lbf/in.2,
v1 = 6.0 ft3/lb, to state 2 where
p2 = 99.6 lbf/in.2, according to
pv1.3 = constant. The relationship
between pressure, specific volume, and internal energy is
u = (0.2651)pv - 95.436
where p is in lbf/in.2, v is in
ft3/lb, and u is in Btu/lb. The mass of gas is
10 lb. Neglecting kinetic and potential energy effects, determine
the heat transfer, in Btu.