A New Model of Erosion Destruction

Аннотация

A new physical (experimental) model of cavitation destruction of the materials studied is proposed. In the modern model of the cavitation effect, the destruction of materials is associated with the impacts of cumulative jets, which are formed during the asymmetric slamming of cavitation bubbles near the solid surface, and the shock waves that occur during their compression. In the new model, erosion damage is explained by the formation of cavitation tubes (с-tubes) with a spiral high-frequency structure in the materials under consideration, and these tubes were previously unknown in the literature. The destruction of materials is associated with the focusing of acoustic energy along the axis of the spiral structures. When the energy is focused, there is a significant increase in the pressure and temperature along the axis of the spiral structures, which leads to the destruction of the materials under study.