Influence of Orifice Shape on Reaction Rate by Hydrodynamic Cavitation

Keiji Yasuda; Toa Kaji; Zheng Xu

doi:10.4028/www.scientific.net/AMM.625.718

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 625Influence of Orifice Shape on Reaction Rate by...

Influence of Orifice Shape on Reaction Rate by Hydrodynamic Cavitation

Abstract:

Hydrodynamic cavitation is expected to apply to the decomposition of chemicals and the disinfection in wastewater. In this study, the effects of upstream pressure, hole diameter and shape of orifice plate on the reaction rate of I₃^- formation were investigated. The reaction rate increases with increasing upstream pressure of orifice plate. The reaction rates have maximum values, when hole diameters of orifice plate are 2.7 mm at the upstream pressure of 0.9 MPa gauge and 3.0 mm at 0.7 MPa gauge. The reaction rate increases in the order of triangle < square < hexagon < circle shaped hole of orifice plate at the same hole area.