Lumped Parameter and Three-Dimensional Computational Fluid Dynamics Simulation of a Variable Displacement Vane Pump for Engine Lubrication

The paper describes the modeling and the experimental tests of a variable displacement vane pump for engine lubrication. The approach used for the simulation has involved three-dimensional (3D) commercial tools for tuning a zero-dimensional (0D) customized model implemented in the LMS Amesim® environment. Different leakage paths are considered and the axial clearances are variable to take into account the deformation of the pump cover, calculated through a finite element analysis with ANSYS. The vane tip clearances are calculated as function of the dynamic equilibrium equation of the vanes. The displacement control takes into account the internal forces on the stator due to the pressure in all variable chambers and to the contact force exerted by the vanes. The discharge coefficients in the resistive components have been tuned by means of a complete 3D transient model of the pump built with PumpLinx®. The tuned 0D model has been proved to be reliable for the determination of the steady-state flow-speed and flow-pressure curves, with a correct estimation of the internal leakages and of the pressure imposed by the displacement control. The pump has been also tested using a simplified circuit, and a fair agreement has been found in the evaluation of the delivery pressure ripple.

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Lumped Parameter and Three-Dimensional CFD Simulation of a Variable Displacement Vane Pump for Engine Lubrication

Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery ◽

10.1115/fedsm2017-69124 ◽

2017 ◽

Cited By ~ 1

Author(s):

Massimo Rundo ◽

Giorgio Altare

Keyword(s):

Cfd Simulation ◽

Dynamic Equilibrium ◽

Experimental Tests ◽

Flow Speed ◽

Displacement Control ◽

Vane Pump ◽

Element Analysis ◽

Transient Model ◽

Variable Displacement Vane Pump ◽

Variable Displacement

The paper describes the modelling and the experimental tests of a variable displacement vane pump for engine lubrication. The approach used for the simulation has involved 3D commercial tools for tuning a 0D customized model implemented in the LMS Amesim® environment. Different leakage paths are considered and the axial clearances are variable to take into account the deformation of the pump cover, calculated through a finite element analysis with ANSYS®. The vane tip clearances are calculated as function of the dynamic equilibrium equation of the vanes. The displacement control takes into account the internal forces on the stator due to the pressure in all variable chambers and to the contact force exerted by the vanes. The discharge coefficients in the resistive components have been tuned by means of a complete 3D transient model of the pump built with PumpLinx®. The tuned 0D model has been proved to be reliable for the determination of the steady-state flow-speed and flow-pressure curves, with a correct estimation of the internal leakages and of the pressure imposed by the displacement control. The pump has been also tested using a simplified circuit and a fair agreement has been found in the evaluation of the delivery pressure ripple.

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Comprehensive Simulation Model of a High Pressure Variable Displacement Vane Pump for Industrial Applications

Volume 1A: 38th Computers and Information in Engineering Conference ◽

10.1115/detc2018-85099 ◽

2018 ◽

Cited By ~ 2

Author(s):

Massimo Rundo ◽

Michele A. Pavanetto

Keyword(s):

High Pressure ◽

Industrial Applications ◽

Critical Parameters ◽

Displacement Control ◽

Vane Pump ◽

Element Analysis ◽

Variable Displacement Vane Pump ◽

Pressure Variable ◽

Variable Displacement ◽

Flow Pressure

This paper deals with the hydraulic model of a high pressure variable displacement vane pump for industrial applications. The simulation is based on a 0D model implemented in the Amesim® environment with customized libraries. The geometry of the pump is described analytically or numerically and different leakage passageways are taken into account. The evaluation of some critical parameters was performed by means of 3D simulations. A finite element analysis allowed determining the deformation of the port plate for correcting the current axial clearances. A CFD analysis was performed for the evaluation of the discharge coefficients in the valves of the displacement control. The model was validated experimentally in terms of steady-state flow-pressure characteristics and of displacement control dynamics.

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3D CFD numerical analysis of vane dynamic effects on the pressure ripple in a variable displacement vane pump

E3S Web of Conferences ◽

10.1051/e3sconf/202019707001 ◽

2020 ◽

Vol 197 ◽

pp. 07001

Author(s):

Gianluca Marinaro ◽

Emma Frosina ◽

Adolfo Senatore ◽

Kim A. Stelson ◽

Yuhao Feng

Keyword(s):

Three Dimensional ◽

Cfd Analysis ◽

Dynamic Effects ◽

Vane Pump ◽

Time Step ◽

Transition Zones ◽

Plate Design ◽

Variable Displacement Vane Pump ◽

Variable Displacement ◽

Pressure Ripple

A numerical three-dimensional CFD analysis of a variable displacement vane pump has been conducted, investigating the effects on the pressure ripple caused by the vane detaching from the pressure ring. The volume of the fluid over the vane tip has been re-meshed at every time step as a function of the forces acting on the bottom and the top of each vane. The numerical model has been developed using the commercial tool, Simerics MP+, including turbulence and cavitation models. The validation of the model has been done comparing numerical and experimental data. It has been observed that the detachment of the vane occurs during the transition zones when unwanted pressure spikes are generated by a nonoptimized valve plate design. The prediction of vane detachment is crucial for designing a quieter and more durable pump. Vane collision on the stator ring can be a source of noise producing premature wear of both components. Vane detachment from the stator ring has a large effect on pressure ripple even if the volumetric efficiency is only slightly influenced.

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A Study of the Internal Forces in a Variable-Displacement Vane-Pump—Part II: A Parametric Study

Journal of Fluids Engineering ◽

10.1115/1.3242568 ◽

1986 ◽

Vol 108 (2) ◽

pp. 233-237 ◽

Cited By ~ 15

Author(s):

A. M. Karmel

Keyword(s):

Parametric Study ◽

Analytical Study ◽

Design Criterion ◽

Vane Pump ◽

Continuous Components ◽

Variable Capacity ◽

Variable Displacement Vane Pump ◽

Variable Displacement ◽

Internal Forces ◽

Line Pressure

This is the second part of an analytical study of the internal forces in a variable-displacement vane-pump. It presents a parametric study of the forces and torques applied to the mechanism and the shaft of this pump, as functions of line pressure, the eccentricity, and the design geometry. It is shown that the continuous components of the torque and of the direction of the radial shaft-load vary as a sawtooth wave at twice the vane-frequency while the magnitude of the radial shaft-load varies as a square wave at vane-frequency. The design criterion developed in the first part of this study is used to demonstrate the elimination of the magnitude variations in the radial shaft-load. The intermittent components of the internal forces vary as a pulse train at vane frequency and may produce high-peak pressure pulses which must be closely controlled. The variable-capacity feature of variable-displacement vane-pumps has a significant effect on the torque applied to the mechanism, but only a secondary effect on the overall radial shaft-load.

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