Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
expand_more
expand_more
format_list_bulleted
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A reservoir discharges through a steel pipeline, which is 910 mm diameter, 2500 m
long and has wall thickness 32 mm. Water is flowing along the pipe at a steady mean
velocity 2.5 ms!.
(a) Calculate the speed of water hammer waves in the pipe.
(b) Calculate the rise of pressure which would occur if the flow through the pipe were
reduced rapidly to zero due to a failure of the turbine at the downstream end of the
pipe.
(c) Describe the sequence of events which follows this sudden closure, giving the
times and pressure where appropriate, assuming that cavitation does not occur and
neglect any other friction losses.
A hydraulic jump takes place in a 6 m wide
rectangular channel at a point where the
upstream depth is 0.5 m (just before the jump). If
the discharge in the channel is 30 m³/s and the
energy loss in the jump is 1.6 m, then the Froude
number computed at the end of the jump is
(round off to two decimal places)
(Consider the acceleration due to gravity as 10
m/s².)
..
Water is flowing in a 3 m wide rectangular channel. A hydraulic jump occurs and the flow upstream is 360 mm deep while the flow downstream from the jump is 1300 mm deep.
A) Find the discharge flowing in the channel.
B) Find the energy absorbed by the jump in kW.
Please answer correctly
Chapter 13 Solutions
Sustainable Energy
Knowledge Booster
Similar questions
- In a wide rectangular channel with uniform flow the specific energy is 1.08 m. What is the velocity at critical flow? (Given √2g = 4.43)arrow_forwardWater is lifted from a lower reservoir to a higher reservoir by a pump that provides 23 kW of power. The water is being pumped at a rate of 0.03 m^3/s with a velocity V = 1 m/s through the closed conduit connecting the two reservoirs. Accounting for the loss at the submerged discharge at the higher reservoir, determine the friction head loss along the length of the conduit.arrow_forwardof a .If the sequent depth equal to1.7m, and the energy dissipated =0.5g m kg hydraulic jump in a rectangular canal, what's the length of the jump?arrow_forward
- A rectangular channel 10 m wide carries 60 m3/s when flowing 3 m deep. What is the specific energy? Select the correct response: 4.20 3.20 2.30 1.30 Oarrow_forwardProblem 12.24 In a 1 in 20 model of stilling basin, the height of the hydraulic jump in the model is observed to be 0.20 metre. What is the height of the hydraulic jump in the prototype ? If the energy 1 kW, what is the corresponding value in prototype ? 10 dissipated in the model is B qrecpsnarrow_forwardA 10 m wide rectangular channel carries a discharge of 20 m³/s under critical condition. Using g = 9.81 m/s2, the specific energy (in m, up to two decimal places) isarrow_forward
- Q(1): A horizontal rectangular stilling basin is used at the outlet of a spillway to dissipate energy. The spillway discharges 13m'/s and has a uniform width of 12m. At the point where the water enters the basin, the velocity is 10m/s, compute: • The sequent depth of the hydraulic jump, The length of the stilling basin, • The energy loss in the jump, • The efficiency of the jump (the ratio of specific energy after to the specific energy before the hydraulic jump, • If the thickness of the basin is 0.75m, and the sieve analysis for the site soil indicate the d50 is 0.05mm, are the requirements of scour design satisfied or not?arrow_forwardWater discharging into a 6 m wide rectangular horizontal channel from a sluice gate is observed to have undergone a hydraulic jump. If the flow depth and velocity before the jump are 0.5 m and 8 m/s, respectively, then which of the following statements is/are true? A Flow depth after the jump is 2.31 m. B Hydraulic jump formed is a weak jump. C Efficiency of jump is 65.6%. D Relative energy loss is 0.824.arrow_forwardWater is flowing in a 90° triangular channel at a depth of 39 cm. A hydraulic jump occurs. The depth after the jump is 126 cm. a. What is the discharge?b. What is the decrease in specific energy caused by the jump?c. What is the head loss in kW?arrow_forward
- (4) A reservoir discharges through a steel pipeline, which is 910 mm diameter, 2500 m long and has wall thickness 32 mm. Water is flowing along the pipe at a steady mean velocity 2.5 ms'. (a) Calculate the speed of water hammer waves in the pipe. (b) Calculate the rise of pressure which would occur if the flow through the pipe were reduced rapidly to zero due to a failure of the turbine at the downstream end of the pipe. (c) Describe the sequence of events which follows this sudden closure, giving the times and pressure where appropriate, assuming that cavitation does not occur and neglect any other friction losses. (d) To protect the turbine, a surge tank is installed at the downstream end of the pipe, before the turbine (as shown in Figure 2). The surge tank is a simple cylinder, which has a diameter four times that of the pipe. How does the velocity in the surge tank relate to the velocity in the pipe in the event of a sudden closure?arrow_forward1. The radial flow pump produces 0.8 m of frictional head losses within the pump. If 3.10 m of head are delivered to the pump, what is the pump efficiency?arrow_forwardA cylinder of internal cross-sectional area 2 sq.m. is submerged in a liquid to a depth of 1 m. The cylinder is initially empty and contains a plugged orifice of diameter 20 mm in the bottom. The orifice has a discharge coefficient approximately equal to unity. If the plug is removed, how long will it take the cylinder to fill to the level of the surrounding liquid?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
