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What is the hole phenomenon?

2009-04-01View Original

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In a fluid flow, when the pressure at a certain point falls below the air separation pressure at the temperature of the liquid, the gases originally dissolved in the liquid come out and form bubbles; this phenomenon is known as cavitation. When the pressure drops further, below the saturated vapor pressure of the liquid, the liquid rapidly vaporizes, producing numerous vapor bubbles that exacerbate the cavitation effect, resulting in a discontinuous flow of the liquid.

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