Numerical Simulation of Inlet and Outlet Pressures Influencing Internal flow of a Vane Pump

doi:10.3969/j.issn.1000-1093.2014.08.014

Abstract

Abstract: The internal flow of a lubricant vane pump in aircraft engine is simulated using the computational fluid dynamics software Star-cd to estimate the influences of inlet and outlet pressures on its internal flow. A self-compiled code is called by the subroutines of Star-cd to generate the moving mesh of vane pump, especially to capture the gap shape between vane and stator. Rayleigh cavitation model and Mender's SST k-ω model are used in the simulation. The calculated flow rates are obtained under different inlet and outlet pressures. The simulation results demonstrate that the transient flow rate at the inlet is stable, while the transient flow rate at the outlet fluctuates significantly. The calculated results also demonstrate that the flow rate increases significantly with the increase in inlet pressure. And with the increase in outlet pressure, the back flow is increased and the collapse velocity of cavitation is also increased, resulting in a small reduction in the flow flux.

Key words: fluid mechanics, vane pump, numerical simulation, volume of fluid method, cavitation model, turbulence model

CLC Number:

TH137

ZHANG Qun-feng， YAN Pan-pan, SHAN Jian-ping, HE Wan-fa. Numerical Simulation of Inlet and Outlet Pressures Influencing Internal flow of a Vane Pump[J]. Acta Armamentarii, 2014, 35(8): 1223-1229.

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