THE EXPERIMENTAL INVESTIGATION OF THE KIN ETICS OF FILLING UP THE CAPILLARY IN CAVITATION REGIME

The paper concerns the kinetics of liquid rising caused by the ultraso nic cavitation (the sound capillar effect). The method of instantaneou s velocity is applied to the investigation of the opposed pressure inf luence on the velocity of liquid motion through the capillary. The ran ge of the ultrasonic pressure amplitude P-m, in which the above influe nce is anomalous, was detected: the velocity increases together with t he opposed pressure. The evolution of cavitation processes is studied by means of the high speed Aiming (2500 frames per second). The cavita tion pulsations are found and investigated experimentally. It is shown that these pulsations are the reason of the atomalous relation upsilo n(P).