ENGR320 Fluid Mechanics Head Loss Assignment I need you to do these 3 fluid mechanics questions. they are not difficult questions. I need them to be done i

ENGR320 Fluid Mechanics Head Loss Assignment I need you to do these 3 fluid mechanics questions. they are not difficult questions. I need them to be done in word file. ENGR 320
Take Home Quiz (Ch3, 6 &10) Name _______________________
Due 4/29/2019
1. (10 pts, 5pts, 5pts) Water flows through a circular nozzle, exits into the air as a jet, and strikes
a plate. The force required to hold the plate steady is 140 N. Assuming frictionless onedimensional flow, estimate
(a) The velocities (V1 and V2) at section (1) and (2);
(b) The pressure difference between the section (1) and (2);
(c) The mercury manometer reading h.
(1 atm = 101325 Pa; g = 9.81 m/s2; at 20 oC, water ? = 998
kg/m3; mercury ? = 13550 kg/m3)
1
(1)
(2)
2. (15pts) Calculate the head loss of a 1000 m long water pipe. The material of the pipe is
asphalted cast-iron. Design flow rate is 5×10-2 m3/s and the radius is 10 cm. (Assume the
temperature of water is 20oC)
2
3. (25pts) A rectangular channel is placed on a slope =1o. The width is 3m.
(1) What is the most efficient water depth?
(2) What is the hydraulic radius when the water depth is 2m?
(3) If Manning’s n =0.02, what is the uniform flowrate when the water depth is 2 m?
(4) What is the critical depth when Q is 24 m3/s?
(5) What is the Fr of the flow when Q =24 m3/s and water depth is 2 m?
3

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