Abstract
Harnessing the energy associated with cavitation for a number of physical and chemical changes has been pursued enthusiastically by sonochemists using ultrasound equipment of various sizes, shapes and forms. The effect of cavitation as observed in ultrasonic equipment has been attributed to the transient form of cavitation. Hydrodynamically generated cavities are believed to behave in a stable cavitation mode and, hence, are not very useful for the desired sonochemical effects. This work illustrates with numerical simulations the role played by the turbulence in altering a single cavity behavior downstream of a cavitating orifice in a liquid flow. Specifi- cally, it looks into the effect of turbulent pressure fluctuations in transforming otherwise stable cavitation into transient cavi- tation.
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