in this article,the distribution law, of the velocity and pressure in the rotated flowing liquid and the streamlines distribution on the cross-section perpendicular to the rotating axis are analysed and discussed in theory.

The paper presents flow states of the swirl fluid inside the sprayer and swirl-liquid jet outsLide the sprayer with Navier-stokes hydromechanics equations.

A kind of swirling-rotating centrifugal equipment was developed,in which the centrifugal force field was intensified and the separation efficiency was improved remarkably.

The results show that the quasi-sinuous mode disturbance is predominant for the instability of the annular swirling liquid jet.

Refractive index of liquids determined by rotating liquid method;

Instrument for rotating liquid experiment;