RESEARCH OF THE PHENOMENON OF HYDRODYNAMIC LUMINESCENCE IN A TWO-PHASE ENVIRONMENT
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- TITLE: RESEARCH OF THE PHENOMENON OF HYDRODYNAMIC LUMINESCENCE IN A TWO-PHASE ENVIRONMENT
- ABSTRACT: The article presents the results of the study of the phenomenon of hydrodynamic luminescence in a two-phase medium during cavitation in hydraulic systems. To conduct an experimental study, an analysis of the literature on the subject of the study was conducted, a stand based on a hydrodynamic cavitator with an ejector mixer at the inlet was developed. The experiment was performed using mineral oil as a working fluid at an inlet pressure of up to 4 MPa and a flow rate of up to 10 -5 m3/s. The main parameters that were monitored: inlet pressure level, inlet and outlet pressure drop of the sample, flow rate and outlet temperature. Shooting of the processes occurring inside the model was carried out by the camera at a speed of 120 ... 1000 frames per second. Cavitation areas were detected by high-speed video recording and the mechanism of its development in a two-phase medium was studied. As a result of the experiment, it was found that without saturation with inert gas, luminescence occurs when the pressure drops by 2 MPa, whereas with the help of a gas mixture (with a predominant inert gas content) when the pressure drops by 1 MPa. It is concluded that the phenomenon of hydroluminescence can be used as a method for visualizing cavitation. It was found that the saturation of a liquid with an inert gas affects the rheological properties, namely: viscosity, density and physicochemical properties. The modes of the appearance of the glow were determined separately for each component of the experiment.
- PAGES: 29-
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