Cavitation of control valves

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Introduction:

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Cavitation can be caused in a fluid by energy input. For example, a laser beam creates a plasma in liquids which causes the liquid to evaporate creating a cavity. Ultrasonic waves can be used to induce complex high-frequency alternating compression and rarefaction phases in liquids which cause cavitation. In this way, cavitation effects can be applied usefully for cleaning surfaces, for non-invasive operations in the field of medicine and for breaking down agglomerates in the textile finishing industry. In sewage treatment plants, cavitation is used to break down molecules and bacteria cell walls, break up pollutants and dissolve out minerals from organic material.

LIST OF CONTENTS:

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1. Symbols and units
2. Introduction
3. Cavitation
4. Incipient cavitation
5. Bubble implosion
6. Cavitation intensity
7. Cavitation erosion
8. Avoiding cavitation
9. Operation with cavitation

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