Question

Describe the term most economical section of a channel. Explain the condition for most economical rectangular...

Describe the term most economical section of a channel. Explain the condition for most
economical rectangular section for an open channel flow.
Engineering   Civil-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1
  • A channel section is said to be most economical when the cost of construction of the channel is minimum. Cost of construction is minimum when excavation & lining is minimum. A most economical section of a channel also gives maximum discharge for a given cross-sectional area & bed slope.
  • For a rectangular section to be most economical, Following two conditions must be satisfied:- 1] Width (B) = 2 x Depth (d) 2] Hydraulic mean depth (m)   
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A rectangular channel 6.20 m wide and 1.20 m deep is laid on a uniform slope...
A rectangular channel 6.20 m wide and 1.20 m deep is laid on a uniform slope of 0.003. The roughness coefficient of the channel is 0.013 m. a. Determine the discharge in the channel in m3/sec. b. Determine the savings in the lining per meter length of channel if the most efficient rectangular section is to be used for the same flow and properties. c. Determine the savings in earth excavation per meter length of channel if the most efficient...
A rectangular channel narrows through a smooth transition of 3 m at section 1 to 2.7...
A rectangular channel narrows through a smooth transition of 3 m at section 1 to 2.7 m at section 2. Determine the flow depth and velocity at section 2. What is the narrowest width possible at section 2 without changing the upstream conditions.
A rectangular channel with width 5.5 feet conveys 225 cfs. Find the normal depth if the...
A rectangular channel with width 5.5 feet conveys 225 cfs. Find the normal depth if the n=0.022 and slope is 1%. (Requires “guess and check”.)   Determine the Froude number for the channel and flow conditions in 6. State the criticality condition and describe what would have to be done to the roughness value n (increase or decrease) to result in the channel reaching the critical depth (assuming Q and s remained the same)? Explain. hydraulics and hydrogeology
Water flows in a 4-m wide rectangular open channel that has an n = 0.022, a...
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
For a channel with subcritical flow condition, the water depth is below its critical flow depth...
For a channel with subcritical flow condition, the water depth is below its critical flow depth condition and velocity is smaller than the critical velocity. True or False? Explain.
7. A) Find the depth of water flowing through a triangular channel having a bed slope...
7. A) Find the depth of water flowing through a triangular channel having a bed slope of 1 in 3500 and side slope of 1:1, when it carries 1.2 m3/s. Take Manning’s Coefficient N = 0.014 B) For a most economical trapezoidal section of side slope 2h: 5V, bed slope of 1 in 2000 and C = 50. Find the rate of flow if the bottom width of the channel is 5 m.
A rectangular open channel (concrete n=0.012) has a slope of 0.12 ft/ft, and a cross sectional...
A rectangular open channel (concrete n=0.012) has a slope of 0.12 ft/ft, and a cross sectional area of 120 square feet. The water is 50 deg F, with a density of 1.94 slugs/ft3, and a dynamic viscosity of 2.73 x 10-5 lbf-s/ft2. If the water surface has 1.0 foot of free board at peak flow of 870.0 cubic feet per second, is the flow laminar or turbulent? (prove with calculations).
Question: Determine the most economical cross-section of a three-core cable 300 m long supplying a load...
Question: Determine the most economical cross-section of a three-core cable 300 m long supplying a load of 150 kW at 400 V and 0.85 p.f. lagging for 5000 hours in a year and no load for the rest of the year. The cost of the cable including its installation is Rs. (200a + 40)/m where “a” is in square cm. Interest and depreciation on total cost is 15% and unit cost of energy loss is 15 paisa. Assume resistance of...
Please, Explain how a secondary flow and vortex turning are related in an open channel flow....
Please, Explain how a secondary flow and vortex turning are related in an open channel flow. please help to me using picture & equation.
Describe the neuronal control of skeletal muscle contraction and explain the effects of calcium channel blockers...
Describe the neuronal control of skeletal muscle contraction and explain the effects of calcium channel blockers on blood pressure.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT