Theoretical Model of Dynamic Bulk Modulus for Aerated Hydraulic Fluid

Abstract Existing models of bulk modulus for aerated hydraulic fluids primarily focus on the effects pressure and air fraction, whereas effect temperature is disregarded. Based lumped parameter method full cavitation model, combined with improved Henry’s law polytropic course equation, a theoretical model dynamic an fluid derived. The system pressure, are investigated using controlled variable method. results show that inconsistent during compression process. At same point, expansion higher than compression. Under initial faction changing period, in lower modulus. When lower, each point more similar to other. By comparing actual Shell Tellus S ISO32 standard air-containing oil, goodness-of-fit between experimental value at three temperatures 0.9726, 0.9732, 0.9675, which validates model. In this study, calculation considers factors proposed. It predicts different provides basis improving analytical