“…Flow dynamics characteristics can cause much damage to the pump, such as noise, lower volumetric efficiency, overturning of the cylinder block, cavitation, and short service life (Huang, 2004;Ma, Xu, Zhang, & Yang, 2010); therefore, the study of the pump's flow dynamics characteristics is essential. In order to study the influence of the slipper model on hydraulic pumps' flow dynamics characteristics, a time-dependent mathematical model of a hybrid trust pad bearing as a slipper of swash-plate-type axial piston pumps and motors was presented (Kazama, 2005). A hybrid trust bearing was developed as a slipper model of water hydraulic piston pumps and motors, and numerical solutions of the time-dependence problem were also built for a wide range of operations under water-lubricated conditions.…”