The swirl liquid flows can be used for various industrial applications, for example, in equipment for heat and mass exchange, for preparation of mixtures, emulsions, suspensions, installations for burning or drying materials [1]. Nontsationary processes usually present in the zone of generation of swirl flows can substantially influence the development of the transfer processes by their intensification, or they can initiate some dangerous vibrations in the equipment. The motions with a vortex core precession is the principle form of instabilities observed in the swirl monophasic flows with expansion of the fluid. Appearance of a cavitation or an air swirl in the vortw core does not exert a dsisive influence on the helicoidal flow of the fluid in systems with a closed loop or with submerged liquid jet generated by a swirl injector. When the swirl fluid is injected in a gas medium, the motion with precession of of a vortex core disappears, whereas a conical annular jet forms at the injector outlet, which disintegrates in droplets owing to the geat velocity of the liquid film. In this research we analyze the possibility to control swirl liquid flows with a vortex air core, in particular, the processes that occur in the swirl atomising injectors. With this aim to generate a precession motion of the air vortex, immediately near the frontal wall of the swirl camera an additional camera was inserted for a radial expansion of the rotating flux generated by a jet injection through an annular nozzle with the average diameter dm = 14 mm. The generation of the rotating flux in the annular nozzle was performed using four identical tangential channels. The following parameter were under control: the injector geometrical parameters (the height h and depth l of the expansion camera) and the regime parameters - the flow rate (Re number, and the swirl number S). It was stated that by modifying the height and depth of the expansion camera one can obtain three flow regimes in the swirl camera and hollow atomization cone. 1) the stable and symmetric regime, 2) the precession motion of the air vortex and of the hollow atomization cone, and 3) the periodic motion with an elliptic cross-section of the air vortex with respect to the atomizing cone. It was established that various regimes of the swirl flow appear as a consequence of the evolution of the coherent structures in the expansion camera (fig.).figureInfluence of the height of the expansion camera on the precession frequency of the air vortexT h e main forms of the evolution of the vortices in the expansion camera that influence the flows in the swirl camera are as follows: the periodical precession of the base vortex associated with one vortex (regime 2) or the deforming motion of the base vortex associated with two vortices, which appear periodically (regime 3). The associated vortices rotate in the conter directions relative to the base vortex. It was found that sudden transformations of the flow types occur when the height of the expansion camera attains a critical value hc. Moreover, it was stated that the frequency of the pressure oscillations in the swirl camera for the flow regime 3 (h>hc) more than two times exceeds the frequency for the flow regime 2. In the motion regime with presession of the air vortex the uniformity increses of the distribution of the droplets in the pulverisation cone. This regime can be used with the aim to intensify the processes of electrostatic treatment of surfaces by aerosols.