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The cavitation and pitting can be prevented by creating which one of the following conditions? .
- a)Reducing the pressure head
- b)Reducing the velocity head
- c)Increasing the elevation head
- d)Reducing the piezometric head
Correct answer is option 'B'. Can you explain this answer?
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The cavitation and pitting can be prevented by creating which one of t...
Cavitation occurs due to pressure falling below vapour pressure. Reducing the velocity head will increase pressure head and cavitation can. be prevented.
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The cavitation and pitting can be prevented by creating which one of t...
Prevention of Cavitation and Pitting in Hydraulic Systems
Cavitation and pitting are two damaging effects that can occur in hydraulic systems. Cavitation is the formation and collapse of vapor bubbles in the fluid, while pitting is the development of small holes or craters on the metal surfaces due to the impact of the collapsing bubbles. To prevent these effects, certain conditions need to be created in the hydraulic system.
Reducing Velocity Head
The most effective way to prevent cavitation and pitting is by reducing the velocity head of the fluid. This can be achieved by:
1. Increasing the diameter of the pipe or channel, which reduces the velocity of the fluid for a given flow rate.
2. Reducing the flow rate, which also lowers the velocity of the fluid.
3. Installing flow control valves or orifices, which restrict the flow rate and reduce the velocity head.
4. Using a different fluid with higher viscosity, which reduces the velocity of the fluid.
Other Preventive Measures
Apart from reducing the velocity head, other preventive measures include:
1. Increasing the pressure head, which can be achieved by increasing the pump discharge pressure.
2. Increasing the elevation head, which can be done by raising the hydraulic system above the vapor pressure of the fluid.
Conclusion
In conclusion, reducing the velocity head of the fluid is the most effective way to prevent cavitation and pitting in hydraulic systems. This can be achieved by increasing the diameter of the pipe or channel, reducing the flow rate, installing flow control valves or orifices, or using a different fluid with higher viscosity. Other preventive measures include increasing the pressure head or elevation head.
Cavitation and pitting are two damaging effects that can occur in hydraulic systems. Cavitation is the formation and collapse of vapor bubbles in the fluid, while pitting is the development of small holes or craters on the metal surfaces due to the impact of the collapsing bubbles. To prevent these effects, certain conditions need to be created in the hydraulic system.
Reducing Velocity Head
The most effective way to prevent cavitation and pitting is by reducing the velocity head of the fluid. This can be achieved by:
1. Increasing the diameter of the pipe or channel, which reduces the velocity of the fluid for a given flow rate.
2. Reducing the flow rate, which also lowers the velocity of the fluid.
3. Installing flow control valves or orifices, which restrict the flow rate and reduce the velocity head.
4. Using a different fluid with higher viscosity, which reduces the velocity of the fluid.
Other Preventive Measures
Apart from reducing the velocity head, other preventive measures include:
1. Increasing the pressure head, which can be achieved by increasing the pump discharge pressure.
2. Increasing the elevation head, which can be done by raising the hydraulic system above the vapor pressure of the fluid.
Conclusion
In conclusion, reducing the velocity head of the fluid is the most effective way to prevent cavitation and pitting in hydraulic systems. This can be achieved by increasing the diameter of the pipe or channel, reducing the flow rate, installing flow control valves or orifices, or using a different fluid with higher viscosity. Other preventive measures include increasing the pressure head or elevation head.
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The cavitation and pitting can be prevented by creating which one of the following conditions? .a)Reducing the pressure headb)Reducing the velocity headc)Increasing the elevation headd)Reducing the piezometric headCorrect answer is option 'B'. Can you explain this answer?
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