Simulation study and experimental verification of surface texture induced cavitation effect

Abstract

Considering the cavitation effect, the numerical simulations were performed by using Ansys-Fluent17.0 software to study the lubrication processes of frictional pairs with surface micro-textures. And the simulation results were verified by designing and building a test bench to collect gas phase diagram of texture induced oil film cavitation. Studies have shown that in the entrance area of the texture, due to a sudden change in the section, a negative pressure is generated; when the speed reaches a certain level, the negative pressure value reaches the cavitation pressure value of the oil film, causing cavitation of the oil film; And the cavitation effect can improve the oil film bearing and the lubrication effect of friction pair. The greater the speed, the more intense the degree of cavitation, the more obvious the improvement effect.