Prediction of Flow Field Characteristics of Slipper/Swashplate Pair for Piston Pump Based on CFD in Different Ocean-depths

Abstract

In order to predict the flow field characteristic of slipper/swashplate pairs, environment models are derived to reveal fluid performance changing based on oceanic conditions. Then models of hydrostatic bearing system and pressure field are accomplished through studying flow process. Finally, the distributions of pressure and temperature are obtained by CFD simulation. The results show that, when working depth increases from sea level to 7000m, axial pressures at points A, B, C, and D increase continuously, oil-film presents wedge-shaped distribution. Meanwhile, temperature of oil-film creates behavior respectively including decreasing rapidly, transition adjusting and decreasing rapidly. This caused falling in the stability of oil-film. It is pointed out that deepening environment has a significant influence on field of pressure and temperature for slipper/swashplate pairs, which lays the foundation for analysis of flow field characteristics and performance optimization of piston pump in ocean deeps.