Two (2) pipes in series are used to connect two large bulk water supply reservoirs. Water is conveyed by gravity flow between the reservoirs. The upstream pipe is connected to the reservoir with a flush fitting and contains a globe valve fully open and one 90° bend. The upstream pipe is 1000 metres long and 400 millimetres in diameter. It joins the downstream pipe with a sudden change in diameter. The downstream pipe is 500 millimetres diameter with a length of 3000 metres. The downstream pipe connects to the lower reservoir with a flush fitting and contains a fully open gate valve and three 45° elbows. Both pipes are concrete lined ductile iron (k = 0.3 millimetres). Determine the discharge when the elevation difference between the water levels in the reservoirs is (30 + 11) m, where x is equal to the last two (2) digits of your student number. Include a clearly marked Moody diagram for each pipe, showing Re and k/D for each f as used in your calculations of friction headloss with the Darcy-Weisbach equation. Ignore the minor loss due to the change in velocity at the junction of the two pipes.
Two (2) pipes in series are used to connect two large bulk water supply reservoirs. Water is conveyed by gravity flow between the reservoirs. The upstream pipe is connected to the reservoir with a flush fitting and contains a globe valve fully open and one 90° bend. The upstream pipe is 1000 metres long and 400 millimetres in diameter. It joins the downstream pipe with a sudden change in diameter. The downstream pipe is 500 millimetres diameter with a length of 3000 metres. The downstream pipe connects to the lower reservoir with a flush fitting and contains a fully open gate valve and three 45° elbows. Both pipes are concrete lined ductile iron (k = 0.3 millimetres). Determine the discharge when the elevation difference between the water levels in the reservoirs is (30 + 11) m, where x is equal to the last two (2) digits of your student number. Include a clearly marked Moody diagram for each pipe, showing Re and k/D for each f as used in your calculations of friction headloss with the Darcy-Weisbach equation. Ignore the minor loss due to the change in velocity at the junction of the two pipes.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Hey can you please help me with this Hydraulic question? cheers
Transcribed Image Text:Two (2) pipes in series are used to connect two large bulk water supply reservoirs. Water is
conveyed by gravity flow between the reservoirs.
The upstream pipe is connected to the reservoir with a flush fitting and contains a globe valve
fully open and one 90° bend. The upstream pipe is 1000 metres long and 400 millimetres in
diameter. It joins the downstream pipe with a sudden change in diameter.
The downstream pipe is 500 millimetres diameter with a length of 3000 metres. The
downstream pipe connects to the lower reservoir with a flush fitting and contains a fully open
gate valve and three 45° elbows.
Both pipes are concrete lined ductile iron (k = 0.3 millimetres).
Determine the discharge when the elevation difference between the water levels in the
reservoirs is (30 + 11) m, where x is equal to the last two (2) digits of your student number.
Include a clearly marked Moody diagram for each pipe, showing Re and k/D for each f as used
in your calculations of friction headloss with the Darcy-Weisbach equation.
Ignore the minor loss due to the change in velocity at the junction of the two pipes.
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