Study of the Cavitation Phenomenon Inside Roller Vane Pump

Bin Zhang; Chun-xiao Zhao; Hao-cen Hong; Da-peng Bai; Hua-yong Yang

doi:10.5293/IJFMS.2021.14.1.042

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자료유형: 학술저널

저자정보: Bin Zhang (Zhejiang University) Chun-xiao Zhao (Zhejiang University) Hao-cen Hong (Zhejiang University) Da-peng Bai (Zhejiang University) Hua-yong Yang (Zhejiang University)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.14 No.1

발행연도: 2021.3

수록면: 42 - 51 (10page)

DOI: 10.5293/IJFMS.2021.14.1.042

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The roller vane pumps are widely used in the automobile industry as steering pumps. However, the cavitation damage near the outlet relief groove could directly decrease serve life and efficiency of the roller vane pump. In this paper, the mechanism of the cavitation is discussed, especially the cavitation damage near the tip of the relief groove. The computational fluid dynamics simulation method (CFD) based on dynamic meshing technique and user defined function (UDF) is applied to calculate flow dynamics and multi-phase flow characteristics, especially the flows inside the fluid film between the stator and valve plate. The simulated results show that the cavitation region is the same with the experiment one, and the cavitation inside the fluid film is caused by the shear action of the stator and valve plate. The negative pressure region near the relief groove has an extreme low pressure at 0.08 MPa, and the maximum flow velocity is 99.3 m/s. Besides, the cavitation region near the relief groove has the highest gas volume fraction of 2.23% and the lowest density of 560 kg/m3. Furthermore, the reason why cavitation happened at this position in a roller vane pump is analyzed by theoretical analysis.

#Roller vane pump #Cavitation #Dynamic mesh #Computational fluid dynamics

참고문헌 (16)

참고문헌 신청

Li Mingxue / 2019 / Research on the dynamic evolution process and influence of gas phase during cavitation of gear pump

T. Singh / 1991 / Design of Vane Pump Suction Porting to Reduce Cavitation at High Operation Speeds

김창업 / 2004 / LP가스연료 액상공급시스템 특성연구 / 한국분무공학회지 9(2):18~23

BaoLing Cui / 2019 / Experimental and numerical study of the performance and cavitation flow of centrifugal pump with jetting device / Journal of Mechanical Science and Technology 33(10):4843~4853

L. Tan / 2010 / Experiment and Numerical Simulation of Cavitation Performance for Centrifugal Pump with Inlet Guide Vane / J. Mech. Eng 46(18):177

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