Volume 40 Issue 7
Jul.  2025
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WANG Ge, WANG Yijin, HE Denghui, et al. Cavitation characteristics of rotary vane pump in aeroengine lubricating oil system and their effects on pump performance[J]. Journal of Aerospace Power, 2025, 40（7）：20240106 doi: 10.13224/j.cnki.jasp.20240106
Citation: WANG Ge, WANG Yijin, HE Denghui, et al. Cavitation characteristics of rotary vane pump in aeroengine lubricating oil system and their effects on pump performance[J]. Journal of Aerospace Power, 2025, 40（7）：20240106 doi: 10.13224/j.cnki.jasp.20240106
shu

Cavitation characteristics of rotary vane pump in aeroengine lubricating oil system and their effects on pump performance

doi: 10.13224/j.cnki.jasp.20240106
  • 1.

    State Key Laboratory of Eco-hydraulic in Northwest Arid Region of China，Xi’an University of Technology，Xi’an 710048，China

  • 2.

    Department of Power Engineering，Institute of Water Resources and Hydro-electric Engineering，Xi’an University of Technology，Xi’an 710048，China

  • 3.

    State Key Laboratory of Multiphase Flow in Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China

  • 4.

    Commercial Aircraft Engine Company Limited，Aero Engine Corporation of China，Shanghai 200241，China

  • 5.

    Shanghai Center of Research for Commercial Aircraft Engine Engineering Techniques，Shanghai 200241，China

  • Received Date: 2024-02-27
    Available Online: 2024-09-02
    Abstract

  • To meet the demand for high-performance oil pumps in the lubricating oil system of high thrust and high-speed aeroengines, numerical simulation was conducted on a new high-speed rotary vane oil pump. The Mixture multiphase flow model, Singhal full cavitation model, and renormalization group（RNG） k-ε turbulence model were employed for numerical calculation, and the reliability of the numerical simulation method was verified through experiments. Then, cavitation characteristics of the rotary vane pump and its impact on pump performance under different inlet pressure and oil temperature conditions were analyzed. The results showed that the cavitation gas was mainly distributed in the volume chamber on the oil suction side, as well as on the suction surface of the rotary vane and near the inner wall of the rotor. With the decrease of inlet pressure and the increase of oil temperature, the cavitation phenomenon inside the rotary vane pump intensified, and the cavitation gas increased, which in turn led to a decrease in the average oil discharge flow rate at the pump outlet and a decrease in volumetric efficiency. When the inlet pressure dropped to 40 kPa and the temperature rose to 373.15 K, the average oil discharge flow rate and volumetric efficiency at the pump outlet both significantly decreased. The pressure pulsation at the monitoring point exhibited low-frequency and high-amplitude pulsation characteristics. The cavitation of the rotary vane pump affected not only its oil discharge and volumetric efficiency, but also the stable and reliable operation of the pump.

     

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