Multiparametric experimental analysis of the pin disc rotational cavitation generator

Investigation of free fatty acid reduction from mixed crude palm oil using 3D-printed rotor–stator hydrodynamic cavitation: An experimental study of geometric characteristics of the inner hole

“…This could result in an increase in biodiesel yield [67] . Another study by Gostisa et al, [52] studied the effects of various geometric features such as the diameter, number, and shape of the rotor pins and the gap size between the rotor and stator pins to investigate the mechanisms of cavitation generation and support water pollution. Their analysis relied primarily on the dimensionless Reynolds number, which is proportional to the fluid's velocity, pin size, and density.…”

“…They concluded that a higher pin diameter (6.5 mm) had a beneficial effect on the extent of cavitation and pumping ability. Additionally, a greater number of pins inhibits the growth, elongation, and collapse of the cavitation cloud because there is no area behind the pin where a low-pressure wake form [52] . Fravardin et al, [68] reported that an integrated hydrodynamic/ultrasonic cavitation system can produce methyl ester from leftover cooking oil.…”

“…The present study attempts to determine and optimize the geometric aspects of the inner hole of the rotor design with the aim of reducing the FFA concentration in oil through the use of a 3D-printed rotor–stator cavitation generator. Most previous research has simulated the effect of cavitation devices under various flow conditions using augmentation reactors, and few studies have analyzed the experimental study of rotor geometry such as rotor pin diameter, rotor–stator pin gap distance, and rotor pin shape [52] . However, this experimental investigation mainly focuses on the geometric aspects of the hole configuration on the surface of the rotor, such as the hole’s diameter and depth and the point angle of the cone.…”

Investigation on the cavitation characteristic of a novel cylindrical rotational hydrodynamic cavitation reactor

“…A limited number of scholars have performed local visualization observations of the cavitation flow field in RHCR [23] , [26] , [39] , [40] , [41] . But most of them have investigated cavitation characteristics only from the point of view of qualitative analysis.…”

“…But most of them have investigated cavitation characteristics only from the point of view of qualitative analysis. To the best of our knowledge, quantitative analysis of the results of flow field visualization inside an RHCR has been carried out only by Sun et al [40] and Gostisa et al [39] . Besides, it is well known that cavitation has three-dimensional structural characteristics.…”