Search

In order to achieve a better cavitation effect, the standard K-S turbulence model and the Schnerr-Sauer cavitation model were used to numerically simulate the cavitation flow fields of Venturi tubes based on FLUENT software. By comparing and analyzing the cavitation contours, vapor volume fraction and cavitation number obtained by simulation, the effects of structural parameters such as throat diameter to pipe diameter ratio, inlet angle, throat diameter to length ratio and outlet angle of Venturi tubes on cavitation were investigated. The results show that the cavitation effect firstly increases and then decreases along with the increase of throat diameter to pipe diameter ratio, and there is an optimum value. With the increase of inlet angle, the cavitation effect is weakened. With the increase of throat diameter to length ratio, the cavitation effect is enhanced. With the increase of outlet angle, the cavitation effect is weakened. The study results provide several references for the optimum design of Venturi tube cavitators. [ABSTRACT FROM AUTHOR]