The orifice was used for hydraulic cavitation with its manufacture and replacement easily.The orifice device cavitation simulation model was established under the Fluent software to study the influence between the structure parameters and the cavitation effect

such as the hole area

hole distribution

hole dispersion

and surface roughness.Then the change curves of the gas volume flow with pressure drop were gained

and the cavitation effect of the methylene blue solution was gained in an experiment.The conclusion shows that the cavitation effect of multiple channels is better than a single channel under the same hole area; the increase of the hole area can improve the cavitation effect; when the hole spacing is similar

the hole distribution mode has no obvious influence. When the distribution mode is unchanged

the smaller the degree of pore dispersion

the better the cavitation effect; the low surface roughness of hole can promote cavitation

and vice versa It is the basis of orifice cavitation device parameters optimization.