Question
In: Civil Engineering
The discharge through a rectangular channel 4.4 m wide is 16 m3/s. The Manning’s coefficient n...
- The discharge through a rectangular channel 4.4 m wide is 16
m3/s. The Manning’s coefficient n is 0.03.
- Determine the normal depth when the slope is 0.008. Check whether the flow is sub or supercritical.
- If the normal depth is to be kept at 2 m, determine the slope.
Solutions
Ally Wells answered 3 months agoRelated Solutions
A 50 m3/s is conveyed down a 5-m wide rectangular channel (n = 0.012) with a...
A 50 m3/s is conveyed down a 5-m wide rectangular channel (n =
0.012) with a slope
of 0.02 m/m. The channel transitions into a second channel with a
slope of 0.0008 m/m. A
hydraulic jump occurs on the downstream channel. What is the
downstream depth of the
second channel after the jump? What is the depth of the water
before the jump? What is
the energy loss due to the jump? How long is the total distance of
the...
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....
A 5 m wide rectangular channel carries a flow of 20 m3/s. The slope of the...
A 5 m wide rectangular channel carries a flow of 20
m3/s. The slope of the channel is 0.005 and the
Manning’s n is 0.03. The flow encounters a 0.5 m step up that is
0.1 m long. The depths far upstream and downstream are normal.
Classify this channel
Qualitatively sketch this scenario, label gradually varied flow
curves and provide appropriate depths.
Draw this scenario on an E-Y cycle graph, and label all depth
changes.
Problem 2. A 25-foot wide rectangular channel with Manning’s n of 0.025 is carrying 5000 cfs....
Problem 2. A 25-foot wide rectangular channel with Manning’s n
of 0.025 is carrying 5000 cfs. The slope of the channel is 0.05%
(0.0005 ft/ft). At a specific point, the slope changes abruptly to
5%. Using the direct step method, calculate the profile upstream of
the break in slope, extending upstream to a point where the depth
is within 5 percent of normal depth. (That means the final depth in
your direct step method is between 0.95 and 1.05 times...
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 rectangular channel 2 m wide has a bottom slope of 0.01 and a roughness coefficient...
A rectangular channel 2 m wide has a bottom slope of
0.01 and a roughness
coefficient of 0.017. A sluice gate 2 m wide is located in the
channel. The sluice
gate has a contraction coefficient of 0.61 and a discharge
coefficient of 0.58. The
depth of water just upstream from the gate is 2 m. The depth of
water just
downstream from the gate is 0.5 m. Determine how far upstream from
the gate
the depth of water will...
A flow of 2.0 m3 /s is carried in a rectangular channel of 1.8 m width...
A flow of 2.0 m3 /s is carried in a rectangular channel of 1.8 m
width at a depth of 1.0 m (section 1). There is an upward step of
0.18 m together with a contraction where b reduces to 1.4 m
(section 2).
a) Draw the side view and top view of the channel described
above.
b) Calculate the specific energy at section 1 and plot the
specific energy curve. Show y1, E1, V1 2 /2g on the curve....
4 m3/s of water flows in a Rectangular channel with base width 3 m, base slope...
4 m3/s of water flows in a Rectangular channel with
base width 3 m, base slope J= 0.0016 and roughness coefficient K=
80.
a) find the normal depths and critical depth of the current.
B) determine the current regime.
roughhness coefficient given 80
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.
According to Q=11.X m³/s, S=0.0003X and 1/n=7X in an open channel with a rectangular cross section;...
According to Q=11.X m³/s, S=0.0003X and 1/n=7X in an open
channel with a rectangular cross section; calculate the uniform
flow depth when the channel base width (b) is 4.X meters and
determine the regime of the flow, design the dimensions of this
channel hydraulically, b=? h=?, when b=4.X meters, calculate the
flow depth, flow velocity and channel base slope value with minimum
specific energy. (X=2)
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