Abstract
The paper presents a numerical study of the original design of the rotary pulsating apparatus (RPA). In comparison with the traditional geometry, the simulation of a combined channel consisting of a narrowing section of the rotor and a diverging stator was performed for the first time. The results of numerical simulation of the RPA operation without additional inlet pressure in a wide range of rotor speeds are presented. Distributions of static pstat and total ptot pressure are obtained. The points of extremes and patterns of their changes are revealed. The length of the cavitation cavity in the RPA channel is determined, the equations of dependence. The cavitation characteristics of the RPA were evaluated. The distribution of the volume fraction of the vapor phase and the mathematical dependenceof the maximum value of the vapor phase on the frequency with equal pressures at the inlet and outlet are obtained.
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