Simulation Model and Characteristics of the Cavitation Mixer with Hydrodynamic Grid

A promising method for obtaining homogeneous and high-dispersion emulsion is to create mixers with cavitation treatment of the mixed stream. The present research examines the hydrodynamic constant-flow mixer with a grid made of smooth cylinders as the agitator of cavitation. The authors offer a simulation model of a mixer based on hydrodynamic equations and experimental data of cavitation phenomena in the vortex wake of a cylinder. There has been considered and analyzed the characteristic of the cavitation mixer, which shows the relationship between relative loss of the total stream pressure, the grid geometrical parameter, the Reynolds number, and coefficients of hydraulic resistance of flow-part elements. It is shown that for every Reynolds number and a set of resistance coefficients there is optimum value of a grid geometrical parameter when losses of total pressure are minimum. The experimental characteristic of the mixer which shows correlation between minimum relative stream pressure loss and grid geometrical parameter is revealed. A simulation model and characteristics allow one to develop a hydrodynamic mixer with a minimum power consumption.