Sample 3 Test # 3 for CEE-3500
#1. If elasticity is the dominant effect in a fluid phenomenon (Mach similarity) write out
the velocity ratio in terms of the ratio of the important fluid properties involved.
#2. Gasoline at 16oC flows in a 100-mm pipe at 3.05 m/s. What size pipe should be used
to carry 16oC water at 1.52 m/s in order for the Reynolds numbers to be the same?
#3. Using dimensional analysis develop a Π(Pi) term that involves gravitational
acceleration g, surface tension σ, absolute viscosity μ, and density ρ.
#4. Water flows from a tank A whose level is at elevation 84.0 ft to tank B whose level is
kept at elevation 60.0 ft. The tanks are connected by 100 ft of 12-in pipe (f = 0.020)
followed by 100 ft of 6-in pipe (f = 0.015). There are two 90o bends en each pipe, K for
the contraction is 0.75, and the 12-in pipe projects into tank A. If the elevation of at the
sudden reduction of the pipes 54.0 ft, find the pressure head in the 6-in pipe at the
contraction.
#5. If pump BC shown in the figure below delivers 70 hp to the system when the flow of
water is 7.85 cfs, at what elevation can reservoir D be maintained?