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Hydraulics and Hydrology

by: Mrs. Jettie Towne

Hydraulics and Hydrology CEGR 3143

Mrs. Jettie Towne
GPA 3.55

James Bowen

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James Bowen
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This 2 page Study Guide was uploaded by Mrs. Jettie Towne on Sunday October 25, 2015. The Study Guide belongs to CEGR 3143 at University of North Carolina - Charlotte taught by James Bowen in Fall. Since its upload, it has received 54 views. For similar materials see /class/228934/cegr-3143-university-of-north-carolina-charlotte in Civil Engineering at University of North Carolina - Charlotte.

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Date Created: 10/25/15
Hydraulics CTET 3132 Test No 2 Spring 2000 Bowen March 23 2000 Test Format and Instructions 4 problems on 2 pages 20 30 points per problem 100 points total closed book w 3 pages of handwritten notes and homeworks allowed initial all pages staple solutions to test and hand in package start at 930 end at 1050 Thursday March 23 2000 1 Flow in Parallel 20 points Pipes A and B are connected as shown below and have the following characteristics Pipe Lft D ft C A 1000 5 120 B 1000 75 120 If the head loss from 1 to 2 is 5 ft what are the ows through each pipe and the total ow through the system Use the HazenWilliams equation to estimate ows 1 2 gt 2 Flow in Closed Conduits 30 points Two reservoirs are connected by a 2000ft 12inch water main The elevation of the lower reservoir is 50 ft below the upper reservoir There are three gate valves along the length of pipe all of which are fully open The entrance from the upper reservoir to the pipe is perpendicular and sharp The exit from the pipe to the lower reservoir is also sharp and perpendicular Assuming the ow to be fully rough estimate the ow between the reservoirs Local Loss Coef cients K s Open Gate Valve 015 Sharp Entrance 05 Sharp Exit 10 3 Flow Networks 20 points a Fill in the missing ows in the network below b If all pipes are of the same diameter with relative lengths as shown in the gure which outlet A B or C will have the lowest pressure circle it B10 cfs jdb7351wpd Page 1 Hydraulics CIET 3132 Test No 2 Spring 2000 Bowen March 23 2000 4 Short AnswerMultiple Choice 30 Points A A viscous liquid is owing through a 12inch plastic pipe The Reynolds number is 1200 What is the friction factor f B The friction factor in fully developed turbulent ow fully rough depends upon the following circle one or more a the pipe diameter b the pipe roughness c the uid velocity d the uid viscosity e none ofthese C Water ows through a nozzle which reduces the pipe diameter by a factor of three The velocity has increased by a factor of how much D Water ows through a 8inch concrete pipe C120 The drop in pressure head in the pipe is 10 ft 1000 ft Using the HazenWilliams equation estimate the velocity E Water ows through a 6inch cast iron pipe at 3 ftsec What is the friction factor Use a kinematic viscosity of 10395 ftZs jdb7351wpd Page 2


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