ABSTRACT

The intensity of the technological processes in hydrodynamic cavitation devices is associated with a range of physicochemical and mechanical effects (shock waves, cumulative microstreams, self-excited oscillations, turbulence), caused by the implosion of cavitation bubbles. In turn, this leads to a concentration of bubbles and an increase in their energies, located near the centre of the cloud. Under such conditions, during an implosion, the pressure rises to almost an order of magnitude greater than during the implosion of a single bubble (Litwinienko et al., 2005, Wójs, 2004). Intensive shock waves in the system also lead to an increase in the pressure at the centre of the bubble and a significant increase in the surface area of the phase transition boundary, which when repeated, lead to changes in the chemical composition of the system. These effects, due to the large concentration of cavitation bubbles, lead to favourable conditions for the initiation of physicochemical processes, which under normal conditions are complex or difficult to conduct.