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QUESTION 1 Water flows uniformly with full capacity in an open channel where cross section is...
Question 7 Consider flow in an open channel with slope 1:500 and a Manning's n of...
Question 7 Consider flow in an open channel with slope 1:500 and a Manning's n of 0.030. The channel has a rectangular cross-section with a width of 5 m (a) Uniform flow in this channel has a depth of 1.6 m. What is the flowrate in the channel? (4 marks) (b) Suppose that this uniform flow (at point 1 in the figure below) encounters an obstacle on the channel bed (at point 2). How big would the obstacle need to...
Water flows down a rectangular channel that has a width of 2.2 m, a Manning's n...
Water flows down a rectangular channel that has a width of 2.2 m, a Manning's n of 0.019 and a slope of 1 in 200. Calculate the discharge in the channel when the depth of flow is 0.5 m, 1.0 m, 2.0 m, and 4.0 m. Plot a graph of depth against discharge and comment on its shape, [10 marks] A wide channel has a Manning's number = 0.021, a longitudinal bed slope of 1:250 and conveys 0.XX m3/s/m of...
(b) The cross-section of a flow in a straight reach of river during a flood is...
(b) The cross-section of a flow in a straight reach of river during a flood is shown in Figure 1. The main channel has a Manning's roughness of 0.022 whereas the flood banks are grassed and have a Manning's roughness of 0.035. The longitudinal slope of the channel So is 0.0002 n 0.035 1) 1.5 m 3 m 4 m 3 m n 0.022 6 m Figure 1 Using the Horton Equation for composite roughness, determine (i) The equivalent Manning's...
SULIT EAT 259 QUESTION 2 (CO2- c3/C4- Uniform flow Open Channel) 1.83 m 1.22 m 0.914...
SULIT EAT 259 QUESTION 2 (CO2- c3/C4- Uniform flow Open Channel) 1.83 m 1.22 m 0.914 m Figure 2 represents the approximate shape of a natural stream channel with levees built on either side. The channel is earth covering with light brush. If the channel slope is 0.000 15, determine the normal discharge for depths of 1.83 m. Refer Appendix A for Manning's, n value. (12 marks) i) When is the follow in an open channel said to be uniform?...
(5) Water flows along a trapezoidal channel with base width B=1.5 m, side slope 1:1 (horizontal...
(5) Water flows along a trapezoidal channel with base width B=1.5 m, side slope 1:1 (horizontal to vertical) and depth D=0.7 m. It is controlled downstream by a sharp crested weir that has a crest height of H=2.4 m above the channel bed and a crest width equal to that of the base width. Calculate the flow rate in the channel (check any assumptions you make).
Water flows uniformly down the triangular channel having a downward slope of 0.0095
Water flows uniformly down the triangular channel having a downward slope of 0.0095. The walls are made of finished concrete. (Figure 1) Part A Determine the volumetric flow when y = 1.7 m.
Water flows uniformly down the triangular channel having a downward slope of 0.0079.
Water flows uniformly down the triangular channel having a downward slope of 0.0079. The walls are made of finished concrete. (Figure 1) Part A Determine the volumetric flow when y = 2.5 m.
numec Based from Figure Q1 below, when water flows through trapezoidal channel section, the cross sectional...
numec
Based from Figure Q1 below, when water flows through trapezoidal channel section, the cross sectional area of the fluid (A) and the wetted perimeter of the fluid (P) are related as: 2yn Yn sin e Estimate the value of O for which P = 3 m using Secant Method, when A = 1 m2 and yn = 0.5 with 10° and 60° as the initial approximation for the e. Compute until the 8th iteration P= Yn cot@ + T...
Q) An open channel of rectangular cross-section, with bottom width of 5 ft, contains water flowing...
Q) An open channel of rectangular cross-section, with bottom width of 5 ft, contains water flowing 3 ft deep. The bottom slope of the channel is 0.04 % and it is made of Gunite. Find the flow rate and the average flow velocity of the water. Q) What is the Chezy formula based on? What is the difference between the Manning and Chezy formulas?
Question 6 A concrete-lined trapezoidal channel with uniform flow has a normal depth of 1.5 m. The base width is 4 m and the side slopes are equal at 1 vertical to 2 horizontal. Mannin‘s n-0015....
Question 6 A concrete-lined trapezoidal channel with uniform flow has a normal depth of 1.5 m. The base width is 4 m and the side slopes are equal at 1 vertical to 2 horizontal. Mannin‘s n-0015. The bed slope 0.001 Compute the mean velocity and discharge. If the above channel were to be designed for flooding, it may have a section like in Figure below 8 m 8 m 4 m When the flow goes over the top of the...
Question 7 Consider flow in an open channel with slope 1:500 and a Manning's n of 0.030. The channel has a rectangular cross-section with a width of 5 m (a) Uniform flow in this channel has a depth of 1.6 m. What is the flowrate in the channel? (4 marks) (b) Suppose that this uniform flow (at point 1 in the figure below) encounters an obstacle on the channel bed (at point 2). How big would the obstacle need to...
Water flows down a rectangular channel that has a width of 2.2 m, a Manning's n of 0.019 and a slope of 1 in 200. Calculate the discharge in the channel when the depth of flow is 0.5 m, 1.0 m, 2.0 m, and 4.0 m. Plot a graph of depth against discharge and comment on its shape, [10 marks] A wide channel has a Manning's number = 0.021, a longitudinal bed slope of 1:250 and conveys 0.XX m3/s/m of...
(b) The cross-section of a flow in a straight reach of river during a flood is shown in Figure 1. The main channel has a Manning's roughness of 0.022 whereas the flood banks are grassed and have a Manning's roughness of 0.035. The longitudinal slope of the channel So is 0.0002 n 0.035 1) 1.5 m 3 m 4 m 3 m n 0.022 6 m Figure 1 Using the Horton Equation for composite roughness, determine (i) The equivalent Manning's...
SULIT EAT 259 QUESTION 2 (CO2- c3/C4- Uniform flow Open Channel) 1.83 m 1.22 m 0.914 m Figure 2 represents the approximate shape of a natural stream channel with levees built on either side. The channel is earth covering with light brush. If the channel slope is 0.000 15, determine the normal discharge for depths of 1.83 m. Refer Appendix A for Manning's, n value. (12 marks) i) When is the follow in an open channel said to be uniform?...
numec
Based from Figure Q1 below, when water flows through trapezoidal channel section, the cross sectional area of the fluid (A) and the wetted perimeter of the fluid (P) are related as: 2yn Yn sin e Estimate the value of O for which P = 3 m using Secant Method, when A = 1 m2 and yn = 0.5 with 10° and 60° as the initial approximation for the e. Compute until the 8th iteration P= Yn cot@ + T...
Question 6 A concrete-lined trapezoidal channel with uniform flow has a normal depth of 1.5 m. The base width is 4 m and the side slopes are equal at 1 vertical to 2 horizontal. Mannin‘s n-0015. The bed slope 0.001 Compute the mean velocity and discharge. If the above channel were to be designed for flooding, it may have a section like in Figure below 8 m 8 m 4 m When the flow goes over the top of the...
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