Liquid gas phase change study inside a venturi

Hydrodynamic cavitation is recognized as an innovative and environmentally friendly method within the category of advanced oxidation processes, with extensive applications in industries such as wastewater treatment, disinfection, flotation, etc. Research and investigation into the optimization and intensification of hydrodynamic cavitation remain an evolving and significant field of study. In this research, the flow of cavitation inside a circular Venturi was analyzed using the mixture model and the k−ω SST turbulence model. The flow was simulated in ANSYS Fluent as axisymmetric ۲D, incompressible, and transient. The effects of modifying the divergent wall from simple to quadratic and the influence of pressure ratios on cavitation were studied. The results demonstrated good agreement with experimental data. It was observed that changing the divergent wall from linear to quadratic profile increased vapor production, while reducing the divergence coefficient of the flow led to further vapor generation. Additionally, the quadratic divergent wall increased the average vapor volume fraction at pressure ratios of ۳ and ۳.۹۴۷۷ but produced less vapor than the linear divergent wall at a pressure ratio of ۵.

کلیدواژه ها:

Hydrodynamic cavitation ، Venturi ، Water treatment ، Computational fluid dynamics