Question

Water flows in a rectangular concrete channel that is 10 m wide
and has a slope of 0.005. The depth of the uniform flow in the
channel (y_{1}) is 450 mm and the discharge per width of
the water is 2.2 m^{2}/s. The downstream channel is smooth,
and a hydraulic jump is forced to form in the channel by installing
a sill. Calculate:

(i) the depth and velocity of the water downstream of the hydraulic jump;

(ii) the difference in depths or height of hydraulic jump

(iii) the head loss due to the jump

Answer #1

Let's begin,

*Hope this helps,*

*Please feel free to comment fr further any queries*

*All the best :)*

A rectangular concrete channel
with n=0.013 is to be constructed on 0.5% slope:
1. Design for a flow rate of Q=18 m^3/s.
2. A 30 cm high, 5 m long broad crested weir is placed
in the channel. Calculate the depth upstream y1 and downstream y2
from the weir then get the head loss due to the hydraulic
jump

Water flows in a 4-m wide rectangular
open channel that has an n = 0.022, a slope of 0.005 m/m, and the
flow rate is 10 m3/s. A flow depth of 0.92 m
is located at a particular location in the channel. What type of
flow profile occurs at that location? Given the roughness value,
what is the likely channel material?
(Water surface profile classification
problem)
Hydraulic Engineering

A long rectangular concrete channel (b = 10 ft, n = 0.015)
carries 400 cfs. There is a grade break in the channel; the slope
upstream of the grade break is 0.02 and the slope downstream of the
grade break is 0.002. The following equations are valid for a
rectangular channel: • DC = [(Q2)/(g*b2)]1/3 • y2 =
0.5*y1*[(1+8NFr12)1/2 -1] (for hydraulic jump) • NFr = v/(g*y)1/2
a) Use calculations to classify each section of the channel (steep,
mild, horizontal,...

A hydraulic jump is formed in a trapezoidal channel of 2.0-m bed
width, 1:1 side slope, and carrying a discharge of 6.0 m3/s. The
initial and final depths of the jump are 0.5m and 2.0m,
respectively. Concrete blocks are placed to stabilize the jump. Cf
= 0.6. Construct the M-y diagram for the channel section. Find the
critical depth.

9. A sluice gate is placed across a wide rectangular channel. A
hydraulic jump occurs downstream of the sluice gate. The specific
discharge of flow in the channel is √30 (m2 /s). The flow depth
downstream of the hydraulic jump is 2 m. The contraction
coefficient of the sluice gate is 0.7. What is the sluice gate
opening (w)? (g = 10 m/s2 )
a) 0.8 m
b) 1 m
c) 1.43 m
d) 1.6 m
e) None of above

A long rectangular concrete channel (b = 10 ft, n = 0.015)
carries 400 cfs. There is a grade break in the channel; the slope
upstream of the grade break is 0.02 and the slope downstream of the
grade break is 0.002. The following equations are valid for a
rectangular channel:
DC = [(Q2)/(g*b2)]1/3
y2 = 0.5*y1*[(1+8NFr12)1/2 -1] (for hydraulic jump)
NFr = v/(g*y)1/2
a) Use calculations to classify each section of the channel
(steep, mild, horizontal, adverse or critical)...

an water vertical sluis gate freely 56 m3/s into a rectangular
channel 7 m wide . the gate whic is the same width as the channel
is set at a height of 1.4m above the bed and the depth at the vena
contracta is .85 m the energy loss in the converging flow at a
sluis is quite small so take the head loss B as .05v2 / 2g the
normal depth in the downstream hz=2.6m
1. calculate the depth...

A 10-m wide, rectangular, concrete-lined canal (n=0.013) has a
bottom slope of 0.01 and a constant-level lake at the upstream end.
The steep canal carries a flow of is 250 m3/s and the critical and
normal depths are 4m and 2.37m, respectively. The water level in
the lake is 6.0 m above the bottom of the canal at the entrance. If
the entrance losses are negligible, using Direct Step Method
determine; i. The ﬂow depth 812 m downstream of the...

A wide rectangular channel of width 20 m and has n = 0.035,
determine the critical bed slope and discharge for critical depths
of 0.2, 0.5 and 1.0 m

6. An overflow spillway flows into a mild channel, producing a
hydraulic jump. The channel is rectangular, with Q = 100 ft3/s,
bottom width b = 20 ft, and Manning's n = 0.015. The flow depth at
the toe of the spillway is 0.4 ft and the approximate slope at the
toe of the spillway is 0.1. The slope of the [mild] downstream
channel, which functions as a stilling basin, is 0.0001.
Calculate:
the critical depth, the length...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 12 minutes ago

asked 13 minutes ago

asked 16 minutes ago

asked 28 minutes ago

asked 42 minutes ago

asked 46 minutes ago

asked 46 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago