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Qaagi - Book of Why

Causes

Effects

All Model plastic and foam construction- Expertdesignedpropeller-

the local pressure distribution and flow(passive) is influenced byThe marine propeller cavitation

the enginescausingcavitation ( propeller bubbles

a bubblecausescavitation on the impeller

by having part of the blades out of the water(passive) caused bypropeller cavitation

by water flow over control surfaces onto the propeller at certain speeds(passive) caused byPropeller cavitation

operating conditionresultsin propeller cavitation

liftcan resultin propeller cavitation

turbulence ... in turncan causeprop cavitation

turbulencemay causecavitation of the prop

r operating conditionresultsin propeller cavitation

by a high frequency ultrasonic wave vibration signal in fluid(passive) caused byCavitation

when vapor bubbles formed inside the pump or suction line implode as pressure increases inside the pump(passive) is causedCavitation

for storing and compound circulation of stock(passive) is designedPropeller AgitatorThe propeller agitator

low suction pressure in centrifugal pump with high velocitycausescavitation

Implosion of vapor bubbles that form within the liquid inside a pump iscausescavitation

by insufficient inlet pressure or suction head ( NPSH Required(passive) caused byCavitation

a restriction to the flow of oil on the suction side of the pump(passive) is caused byCavitation

Ultrasonic pressure waves of high frequencydo ... causecavitation

This gascould causeturbopump cavitation

by the formation of bubbles or fluid cavities , which can create a pressure imbalance in your pump(passive) can be causedCavitation

by insufficient inlet pressure or suction head ( NPSH(passive) caused byCavitation

when there is insufficient suction pressure to the pump(passive) is causedCavitation

by excessive vacuum pressure at the pump inlet(passive) caused bycavitation

by insufficient inlet pressure or suction head(passive) caused byCavitation

by air or low oil flow in the pump suction line(passive) caused bycavitation

when : Pump inlet pressure drops below the design inlet pressure(passive) is usually causedCavitation

when liquid in the pump turns to vapor bubbles at low pressure(passive) is caused Cavitation

when liquid in the pump turns to vapor bubbles at low pressure(passive) is causedCavitation

by the pressure waves from the ultrasonic waves(passive) caused bycavitation

extreme low pressure typically on the suction side of a pump , impeller , propeller(passive) is caused byCavitation

low suction pressure(passive) is caused byCavitation

too low suction pressure(passive) is caused byCavitation

by a pressure difference either on the pump body or the impeller(passive) is caused bycavitation Cavitation

a pressure difference either on the pump body or the impeller(passive) is caused byCavitation

Liquid and pressure and flowcan causecavitation

a liquid below vapor pressure pointcausingcavitation

when the valve downstream pressure is higher than the vapor pressure of the liquidcausingcavitation

ultrasonic energy ... liquidwhere ... resultscavitation

liquid s vapor pressureto causecavitation

vibration , noise and serious damage to your propellercausesvibration , noise and serious damage to your propeller

particularly those(passive) caused byparticularly those

in improved efficiency and extended propeller liferesultsin improved efficiency and extended propeller life

in improved efficiency and extended propeller liferesultin improved efficiency and extended propeller life

vibration , noise and serious damage to your propellercausesvibration , noise and serious damage to your propeller

vibration , noise and serious damage to your propellercausesvibration , noise and serious damage to your propeller

vibration , noise and serious damagecausesvibration , noise and serious damage

vibration , noise and serious damagecausesvibration , noise and serious damage

the hull pressure fluctuations(passive) caused bythe hull pressure fluctuations

hull pressure fluctuations(passive) caused byhull pressure fluctuations

the hull pressure fluctuations(passive) caused bythe hull pressure fluctuations

noise(passive) caused bynoise

vibrationcausingvibration

underwater noise(passive) caused byunderwater noise

Most underwater noise from large vessels(passive) is caused byMost underwater noise from large vessels

Much , if not most , of the underwater noise(passive) is caused byMuch , if not most , of the underwater noise

in improved efficiency and extended propeller liferesultin improved efficiency and extended propeller life

in improved efficiency and extended propeller liferesultsin improved efficiency and extended propeller life

problems(passive) caused byproblems

a drop in efficiency at speeds overcauseda drop in efficiency at speeds over

a small but violent implosion which could warp the propeller bladecausesa small but violent implosion which could warp the propeller blade

The condition(passive) is caused byThe condition

damage to components ( erosion of the material ) , vibrations , noise and a loss of efficiencycausesdamage to components ( erosion of the material ) , vibrations , noise and a loss of efficiency

that much , if not most , of(passive) is caused bythat much , if not most , of

that much(passive) is caused bythat much

the noise coming from the submarine(passive) was caused bythe noise coming from the submarine

the noise coming from the submarine(passive) was causedthe noise coming from the submarine

a drop in efficiency at speeds over 30causeda drop in efficiency at speeds over 30

loading(passive) caused byloading

shock loading(passive) caused byshock loading

in noise ... damage to the pump , and loss of efficiencyresultsin noise ... damage to the pump , and loss of efficiency

pump vibration and mechanical damage ( metal erosion or pittingmay causepump vibration and mechanical damage ( metal erosion or pitting

performance loss , vibration , noise , surface pitting andmay causeperformance loss , vibration , noise , surface pitting and

a great deal of noise , damage to components , vibrations , and a loss of efficiencycausesa great deal of noise , damage to components , vibrations , and a loss of efficiency

vibration , noise and damage to the blades and the pumpcausesvibration , noise and damage to the blades and the pump

vibration , noise , reduced efficiency , pitting , and erosion of the surfaces in contact with collapsing bubbles [ 2will causevibration , noise , reduced efficiency , pitting , and erosion of the surfaces in contact with collapsing bubbles [ 2

to failure of pump housing , impeller damage and decreased flow and pressurecan leadto failure of pump housing , impeller damage and decreased flow and pressure

in high noise , excessive vibration and damage to the valveresultin high noise , excessive vibration and damage to the valve

loss of pressure , efficiency and also erosion of pump internalscausingloss of pressure , efficiency and also erosion of pump internals

noise , damage to components , vibrations and loss of efficiency in pumps , as well as mechanical seal damage in loop slurry reactors ... for examplecan causenoise , damage to components , vibrations and loss of efficiency in pumps , as well as mechanical seal damage in loop slurry reactors ... for example

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