DEVELOPMENT OF A RESEARCH STAND FOR STUDYING THE INFLUENCE OF SHOCK-WAVE PRESSURE AS AN INDEPENDENT FACTOR OF ULTRASONIC CAVITATION IMPACT

GYRGSR

Abstract

To date, the intensifying effect of ultrasonic cavitation on physicochemical processes is widely known. It has been repeatedly established that cavitation and related nonlinear phenomena (shock waves, acoustic flows, heating of the medium) accelerate physicochemical processes. However, modern studies of cavitation influence are either based on theoretical approaches, which as a rule consider shock-wave pressure separately without taking into account other factors, or on experimental studies, which determine the final efficiency of the process (the efficiency criterion depends on the type of process) under the action of a set of cavitation factors. While to ensure maximum process efficiency it is necessary to identify the effect of each factor separately to select modes and conditions of action (and, perhaps, and ways to modulate ultrasonic oscillations), which strengthen the factor that most influences the speed of the process, and weaken parasitic factors. In order to develop the direction of experimental studies of the influence of individual cavitation factors, a stand was developed, which makes it possible to influence the medium with an analogous change in temperature, as in the case of ultrasonic influence, but without shock-wave pressure formed by the collapse of cavitation bubbles.