6.68 Jet-type pumps are sometimes used for special purposes, such as to circulate the flow in basins in which fish are being reared. The use of a jet-type pump eliminates the need for mechanical machin- ery that might be injurious to the fish. The accompanying figure shows the basic concept for this type of application. For this type of basin the jets would have to increase the water surface elevation by an amount equal to 6V²/2g, where V is the average velocity in the basin (1 ft/s as shown in this example). Propose a basic design for a jet system that would make such a recirculating system work for a channel 8 ft wide and 4 ft deep. That is, determine the speed, size, and number of jets. Nozzle and jet 1 ft/s 8 ft Plan view Nozzle 22 Jet 4 ft Channel floor Pump View A-A PROBLEM 6.68
6.68 Jet-type pumps are sometimes used for special purposes, such as to circulate the flow in basins in which fish are being reared. The use of a jet-type pump eliminates the need for mechanical machin- ery that might be injurious to the fish. The accompanying figure shows the basic concept for this type of application. For this type of basin the jets would have to increase the water surface elevation by an amount equal to 6V²/2g, where V is the average velocity in the basin (1 ft/s as shown in this example). Propose a basic design for a jet system that would make such a recirculating system work for a channel 8 ft wide and 4 ft deep. That is, determine the speed, size, and number of jets. Nozzle and jet 1 ft/s 8 ft Plan view Nozzle 22 Jet 4 ft Channel floor Pump View A-A PROBLEM 6.68
Chapter2: Loads On Structures
Section: Chapter Questions
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Transcribed Image Text:6.68 Jet-type pumps are sometimes used for special purposes, such
as to circulate the flow in basins in which fish are being reared. The
use of a jet-type pump eliminates the need for mechanical machin-
ery that might be injurious to the fish. The accompanying figure
shows the basic concept for this type of application. For this type of
basin the jets would have to increase the water surface elevation by
an amount equal to 6V²/2g, where V is the average velocity in the
basin (1 ft/s as shown in this example). Propose a basic design for
a jet system that would make such a recirculating system work for a
channel 8 ft wide and 4 ft deep. That is, determine the speed, size,
and number of jets.
Nozzle and jet
1 ft/s
8 ft
Plan view
Nozzle
22
Jet
4 ft
Channel floor
Pump
View A-A
PROBLEM 6.68
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