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Evaluation of Tooth Space Pressure and Incomplete Filling in External Gear Pumps by Means of Three-Dimensional CFD Simulations

Author

Listed:
  • Alessandro Corvaglia

    (Department of Energy, Politecnico di Torino, 10129 Turin, Italy)

  • Massimo Rundo

    (Department of Energy, Politecnico di Torino, 10129 Turin, Italy)

  • Paolo Casoli

    (Department of Industrial Engineering, University of Parma, 43124 Parma, Italy)

  • Antonio Lettini

    (Casappa SpA, Lemignano di Collecchio, 43044 Parma, Italy)

Abstract

The paper presents the computational fluid dynamics simulation of an external gear pump for fluid power applications. The aim of the study is to test the capability of the model to evaluate the pressure in a tooth space for the entire shaft revolution and the minimum inlet pressure for the complete filling. The model takes into account the internal fluid leakages and two different configurations of the thrust plates have been considered. The simulations in different operating conditions have been validated with proper high dynamics transducers measuring the internal pressure in a tooth space for the entire shaft revolution. Steady-state simulations have been also performed in order to detect the fall of the flow rate due to the incomplete filling of the tooth spaces when the inlet pressure is reduced. It has been demonstrated that, despite the need of a compromise for overcoming the limitation of considering fixed positions of the gears’ axes and of the thrust plates, significant results can be obtained, making the CFD approach very suitable for such analyses.

Suggested Citation

  • Alessandro Corvaglia & Massimo Rundo & Paolo Casoli & Antonio Lettini, 2021. "Evaluation of Tooth Space Pressure and Incomplete Filling in External Gear Pumps by Means of Three-Dimensional CFD Simulations," Energies, MDPI, vol. 14(2), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:2:p:342-:d:477592
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    References listed on IDEAS

    as
    1. Massimo Rundo, 2017. "Models for Flow Rate Simulation in Gear Pumps: A Review," Energies, MDPI, vol. 10(9), pages 1-32, August.
    2. Massimo Rundo & Giorgio Altare & Paolo Casoli, 2019. "Simulation of the Filling Capability in Vane Pumps," Energies, MDPI, vol. 12(2), pages 1-18, January.
    3. Rituraj Rituraj & Andrea Vacca & Mario Antonio Morselli, 2020. "Thermal Modelling of External Gear Machines and Experimental Validation," Energies, MDPI, vol. 13(11), pages 1-24, June.
    4. Yash Girish Shah & Andrea Vacca & Sadegh Dabiri, 2018. "Air Release and Cavitation Modeling with a Lumped Parameter Approach Based on the Rayleigh–Plesset Equation: The Case of an External Gear Pump," Energies, MDPI, vol. 11(12), pages 1-28, December.
    5. Divya Thiagarajan & Andrea Vacca, 2017. "Mixed Lubrication Effects in the Lateral Lubricating Interfaces of External Gear Machines: Modelling and Experimental Validation," Energies, MDPI, vol. 10(1), pages 1-20, January.
    6. Shu Wang & Hisatoshi Sakura & Aditya Kasarekar, 2011. "Numerical modelling and analysis of external gear pumps by applying generalized control volumes," Mathematical and Computer Modelling of Dynamical Systems, Taylor & Francis Journals, vol. 17(5), pages 501-513, March.
    7. Emma Frosina & Adolfo Senatore & Manuel Rigosi, 2017. "Study of a High-Pressure External Gear Pump with a Computational Fluid Dynamic Modeling Approach," Energies, MDPI, vol. 10(8), pages 1-20, July.
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    Cited by:

    1. Paolo Casoli & Carlo Maria Vescovini & Massimo Rundo, 2023. "One-Dimensional Fluid Dynamic Modeling of a Gas Bladder Hydraulic Damper for Pump Flow Pulsation," Energies, MDPI, vol. 16(8), pages 1-18, April.

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