Link to computation / answer
Link to lecture 4
Link naar les 4 |
Exercise 1
For the frictionless syphon in Figure 2.4 (So there is no energy loss), determine the discharge and the pressure heads at A and B, given that the pipe diameter is 200 mm and the nozzle exit is 150 mm
Assume fresh water and g = 10 [m/s2] |
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Exercise 2
- Distance between P1 en P2 (L) = 1500 m
- The ditch has a bed-slope [helling bodem] of 1:2000
- Assume bed-slope = slope pressure line = slope total head
- Water-depth (D) = 1,5 m at P1 and P2
- Discharge Q = 21 m3/s
- Bed width ditch (W) = 4 m
- Slope ditch (S) = 1:3
- Assume fresh water and g = 10 [m/s2]
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Questions:
- Classify the flow at the part P1 – P2 (steady, unsteady, uniform, non uniform)
- Classify the flow at the weir (steady, unsteady, uniform, non uniform)
- Is the flow between P1 – P2 one, two or three dimensional?
- Is the flow at the weir one, two or three dimensional?
- Compare P1 and P2 with Bernoulli’s equation (with energy loss)
- Based on question 5, how much is the energy loss between P1 and P2.
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Exercise 3
- Distance between P1 en P2 (L) = 1500 m
- The bed of the ditch is horizontal
- Water-depth (D) = 1,5 m at P1
- Water-depth (D) = 1,2 m at P2
- Discharge Q = 21 m3/s
- Bed width ditch (W) = 4 m
- Slope ditch (S) = 1:3
- Assume fresh water and g = 10 [m/s2]
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Questions:
- Classify the flow at the part P1 – P2 (steady, unsteady, uniform, non uniform)
- Classify the flow at the weir (steady, unsteady, uniform, non uniform)
- Is the flow between P1 – P2 one, two or three dimensional?
- Is the flow at the weir one, two or three dimensional?
- Compare P1 and P2 with Bernoulli’s equation (with energy loss)
- Based on question 5, how much is the energy loss between P1 and P2.
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