Question
In: Civil Engineering
A rectangular channel of bottom width B = 7 m carries an average discharge of Q...
A rectangular channel of bottom width B = 7 m carries an average discharge of Q = 8 m3/s. There are two successive long reaches. The first reach has s01=0.015 and n1=0.010; and the second reach has s02=0.0017 and n2=0.021. Classify the slopes.
Solutions
Ally Wells answered 7 months agoRelated Solutions
A rectangular channel with a base width of 3 m carries a discharge of 6 m3/s...
A rectangular channel with a base width of 3 m carries
a discharge of 6 m3/s at a depth of 1.1 m. At downstream, there is
a gradual rising of a channel bed of 0.1 m.
a) Plot the specific energy curve from y = 0.4 m to
1.3 m in a step 0.1 m and from the curve, determine the depth of
flow at the downstream section. Label the graph and show your
working answers clearly on the graph....
Consider a rectangular channel with a variable width b and horizontal channel bottom, a) Obtain the...
Consider a rectangular channel with a variable width b and
horizontal channel bottom, a) Obtain the equation of water surface
profile (dy/dx) as function of Froude number and channel width
change (db/dx) in a channel transition assuming that over a short
distance x, the energy losses can be neglected. b) Using the
equation you have obtained, draw the water surface profile if flow
is subcritical and if there is an enlargement in channel cross
section b in downstream section (2)...
Consider a rectangular channel with a variable width b and horizontal channel bottom, a) Obtain the...
Consider a rectangular channel with a variable width b and
horizontal channel bottom, a) Obtain the equation of water surface
profile (dy/dx) as function of Froude number and channel width
change (db/dx) in a channel transition assuming that over a short
distance x, the energy losses can be neglected. b) Using the
equation you have obtained, draw the water surface profile if flow
is subcritical and if there is an enlargement in channel cross
section b in downstream section (2)...
Consider a rectangular channel with a variable width b and horizontal channel bottom, a) Obtain the...
Consider a rectangular channel with a variable width b and
horizontal channel bottom, a) Obtain the equation of water surface
profile (dy/dx) as function of Froude number and channel width
change (db/dx) in a channel transition assuming that over a short
distance x, the energy losses can be neglected. b) Using the
equation you have obtained, draw the water surface profile if flow
is subcritical and if there is an enlargement in channel cross
section b in downstream section (2)...
A rectangular channel 10m wide carries a discharge of 40m3 /s. If at a section in...
A rectangular channel 10m wide carries a discharge of 40m3 /s.
If at a section in this channel the depth is 1.5m, how far
(upstream or downstream) from this section will the depth be
2.0m.Take So=0.00009and manning’s constant n=0.017.
A rectangular laboratory channel has a bottom width of 6.0 in, a Manning roughness coefficient of...
A rectangular laboratory channel has a bottom width of 6.0 in, a
Manning roughness coefficient of n = 0.010, longitudinal slope of
2% (So = 0.02). The discharge is 180 gpm. Assume α = 1. The water
depth is 2.5 inches at Point A, and 3.0 inches at Point B. The
normal depth is 2.066 in and critical depth is 3.228 in.
(a) Use the direct step method with one step (Δy = 0.5 in) to
determine the distance from...
B. A trapezoidal channel with a bottom width of 4 m and side slopes 4H: 1V...
B. A trapezoidal channel with a bottom width of 4 m and side
slopes 4H: 1V carries a discharge of 30 m3 /s. The channel has bed
slope= 0.1 % and manning roughness coefficient = 0.015. Determine
the following:
i. the minimum specific energy
ii. the normal depth iii. the critical slope
iv. state of the flow in the channel
13.(LAB) A discharge of 25 m3/s is passing in a rectangular channel of bed width 8.0...
13.(LAB) A discharge of 25 m3/s is passing in a rectangular channel
of bed width 8.0 meters and water depth 3.0 meters. The channel bed
width is gradually contracted from 8.0 meters at section (1) to 6.0
meters at section (2). In the contraction zone, a smooth hump is
placed in the channel in which the bed level is gradually increased
by 1.00 m. Determine: (i) The change in water levels, (ii).The
minimum height of hump so that y2 =...
A trapezoidal channel has a bottom width of 3.25 m and sides with a slope of...
A trapezoidal channel has a bottom width of 3.25 m and sides
with a slope of 1 vertical
to 1.5 horizontal. The slope of the bed is 1 in 2000 and the
depth of water is 1.2 m.
a) Using the Manning Formula with n = 0.025, calculate the velocity
and
the discharge rate of the flow.
b) Calculate the Chezy number for the channel and use that to
re- calculate the velocity and the discharge rate of the flow....
A rectangular channel carries a flow at a velocity of 2.1 m/sec and at a depth...
A rectangular channel carries a flow at a velocity of 2.1 m/sec
and at a depth of 2.1m. The tail end gate of the channel is
suddenly closed. Find the height and speed of the surge. What would
be the values of these quantities if the gate is partially closed
to release half of the flow?
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