cavitation
kav-uh-TAY-shuhn
/ˌkæv.ɪˈteɪ.ʃən/
The formation of empty spaces or bubbles in a liquid, followed by their rapid and destructive collapse.
A highly specific engineering hazard where low pressure creates vapor bubbles that implode, eroding metal surfaces.
The story behind the word. Derived from the Latin 'cavus', meaning hollow (which also gives us 'cave' and 'cavity'). In fluid dynamics, cavitation is literally the creation of tiny, hollow vapor 'caves' in a liquid that collapse with immense, destructive force.
Word relationships
- pitting: Pitting is the physical damage or holes left behind, whereas cavitation is the fluid dynamic process that causes it.
Commonly confused with
- boiling: Boiling occurs when temperature increases vapor pressure, whereas cavitation occurs when local pressure drops below vapor pressure at constant temperature.
Word family
- cavitate (verb): To form bubbles or cavities in a liquid due to rapid pressure changes.
Collocations
- propeller cavitation
- cavitation damage
- prevent cavitation
- cavitation bubbles
Example sentences
- "The submarine's propeller suffered severe pitting and damage due to cavitation at high speeds." Marine engineering failure
- "Engineers heard a crackling sound like gravel inside the pump, which is a classic symptom of cavitation." Industrial pump maintenance
Memory hook
Think of 'cavitation' as creating tiny 'cavities' in metal propeller blades. Cavitation = Cavities in metal from bubble implosions.
When not to use
Do not use for simple boiling or normal bubbling; cavitation specifically involves pressure drops and violent implosions.
Fun facts
- The pistol shrimp snaps its claw so fast it creates a cavitation bubble reaching temperatures near that of the sun's surface, stunning its prey with the shockwave.
Explore more words
Erode, effervescence, Bubble, subsidence, liquefaction, hydrodynamic
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