Influence of liquid properties on cavitation erosion

Abstract

The ratio of air content from 0.75 to 1.5 to that in ordinary ion exchanged water does not affect the cavitation erosion of aluminum which was obtained in aerated or deaerated ion exchange water. The mass loss rate in water/ethanol liquid is proportional to the product of (vapor pressure)^<-0.9> and (the ratio of air content)^<-3.1>. Considering these two findings, it was concluded that there exists the critical ratio 1.6 of air content which begins to decrease the erosion rate. Moreover, it was found that the mass loss rate in various test liquids corresponds well with a summation of square of impact loads.