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http://dx.doi.org/10.5293/KFMA.2007.10.1.034

Numerical Analysis on Flow Characteristics of a Vane Pump  

Lee, Sang-Hyuk (서강대학교 기계공학과 대학원)
Jin, Bong-Yong (CDAK 기술연구소)
Hur, Nahm-Keon (서강대학교 기계공학과)
Publication Information
The KSFM Journal of Fluid Machinery / v.10, no.1, 2007 , pp. 34-40 More about this Journal
Abstract
In this study, the characteristic of a vane pump of automotive power steering system is numerically analyzed. The vane pump changes the energy level of operation fluid by converting mechanical input power to hydraulic output. To simulate this mechanism, moving mesh technique is adopted. As a result, the flow rate and pressure are obtained by numerical analysis. The flow rate agrees well with the experimental data. Moreover, the variation and oscillation of the pressure around the rotating vane are observed. As a result of flow characteristics, The difference of pressure between both side of vane tip causes the back flow into the rotor. As the rotational velocity increases, the flow rate at the outlet and the pressure in the vane tip rises with higher amplitude of oscillation. In order to reducing the oscillation, the design of devices for decreasing the cross-area of the outlet part and returning the flow from the outlet to the inlet is required.
Keywords
Vane pump; CFD; Moving mesh; Power steering; Node expansion and contraction method;
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