Abstract
Cavitation is a common phenomenon in fluid systems. Cavitation includes bubbles formation and collapse due to propellants which reduce local pressure or increase local temperature. Cavitation leads harmful effects, i.e., noise and vibration, erosion, flow rate loss, and efficiency loss. In other hand, nanotechnology is spreading rapidly in different fields especially fluid systems. Some of the nanoparticles are used to increase heat transfer rate, bubble absorption, drug delivery, and so on. This kind of additive can affects cavitation occurrence. In this study, we assess influences of SiO2nanoparticle on cavitation initiation in a globe style valve by low frequency acceleration analysis. The study shows SiO2nanoparticles accelerate cavitation occurrence and in someway, force cavitation nature to relatively get away from low frequency collapsing toward high frequency one.
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