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# Fluid Mechanics CE 330

KU

GPA 3.53

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This 2 page Class Notes was uploaded by Ned Sauer I on Monday September 7, 2015. The Class Notes belongs to CE 330 at Kansas taught by Alfred Parr in Fall. Since its upload, it has received 17 views. For similar materials see /class/182431/ce-330-kansas in Civil & Envr Engineering at Kansas.

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Date Created: 09/07/15

CE 330 Homework Problems for Open Channel Flow Sp 2007 Problem 1 The strange channel below has a slope of 00005 n 030 a Determine discharge ifthe uniform depth of flow is 65 ft 160 cfs b Determine the Froude number for the conditions in a 0200 39lt y65 4 1 Problem 2 Water ows at a uniform depth Z of 9 ft in the trapezoidal channel below n yo 0025 and 80 00005 1 15 a Find the discharge and Froude number b Find the critical depth of ow for the discharge found in part a c fthe discharge is doubled determine the uniform depth of ow a Q600 cfsFr0278 b yc 489 c yo121 Problem 3 Water flows in a 20ft wide rectangular channel at a uniform depth of 10 ft and a velocity of 5 fps fthe nvalue of the channel is 003 determine the bed slope and the Froude number 0 000119 Fr 0279 CE 330 Thanksgiving Homework Specific Energy in Open Channel Flow Problem 1 Water ows at the rate of 550 y cfs in a 10ft wide rectangular channel The depth at Section 1 is 11 feet for ac below Q 550 cfs It is different for part d a Determine speci c energy and the Froude Number for Section 1 EA b A smooth transition occurs where the bed rises 15 feet Determine the depth and Froude number at Section 2 c Determine the minimum bed rise required if Section 2 becomes critical This is the incipient choke condition Also nd yo d lfthe bed rise is 6 feet determine y1 and y2 This will be the choke condition where upstream flooding occurs thus y1 increases y2 will be critical a 1139 0266 b 935 0339 c 458 454 d 125 454 Problem 2 Water ows at the rate of 550 cfs in a Elevation View 10ft wide rectangular channel The depth at v x Section 1 is 11 feet for ac below Q 550 cfs It is different for part d gt y1 W a Determine speci c energy and the Froude Number for Section 1 Same as above b A smooth lateral transition occurs where the bed width reduces to 9 feet Determine the Plan View depth and Froude number at Section 2 Determine the minimum bed width required if Section 2 becomes critical This is the incipient choke condition Also find yc2 lfthe bed width is 4 feet determine y2 and y1 This will be the choke condition where upstream flooding occurs thus y1 increases a 1139 0266 b 109 c 463 759 d 122 836 v 0 v 0 v Problem 3 Water ows uniformly in a trapezoidal channel with a base width of 15 feet and side slopes of21 horvert If n 0030 So 0001 and the uniform depth is 10 feet determine the following a Discharge b Froude number for uniform ow c The speci c energy for uniform ow d The critical depth a 1790 cfs b 0356 c 1040 d 584

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