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

2018 ◽  
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.

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

2017 ◽  
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.

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

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
Massimo Rundo ◽  
Giorgio Altare
Keyword(s):  
Dynamic Equilibrium ◽  
Three Dimensional ◽  
Flow Speed ◽  
Dynamics Simulation ◽  
Displacement Control ◽  
Vane Pump ◽  
Element Analysis ◽  
Transient Model ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement

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.

Variable Displacement Vane Pump for Turbine Engine Applications

2007 ◽  
Author(s):  
Paul J. Paluszewski ◽  
Mihir C. Desai ◽  
Richard C. Millar
Keyword(s):  
High Pressure ◽  
Thermal Management ◽  
Thermal Efficiency ◽  
System Level ◽  
Engine Fuel ◽  
Fuel Temperature ◽  
Vane Pump ◽  
Turbine Engine ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement

Increasing airframe fueldraulic system pressures and flow requirements have put severe demands on fuel system thermal management techniques. Heat loads from a variety of sources are constantly increasing the temperatures at which modern aircraft fuel systems are required to operate. Variable Displacement Vane Pump (VDVP) based systems are a solution to thermally constrained high pressure turbine engine fuel supply and fueldraulic actuation systems (i.e. variable engine nozzle and/or variable engine geometry). VDVPs offer several benefits including exceptional thermal efficiency, fast response and contamination resistance comparable to legacy systems. Utilizing a simple pumping design in conjunction with recent advances in material and bearing technology, the VDVP has demonstrated high thermal efficiency for flow turndowns up to 100:1 in a range of displacements from 5 gpm (small engines) to 120 gpm (large turbofans). Based on testing to date, VDVP systems also have potential for high-pressure fueldraulics and are capable of cavitation-free operation for extended periods of time. The VDVP is easy to operate in flow or pressure control loops and can easily meet the slew requirements of modern engines. With over 15000 hours of testing under various pressure, flow and fuel temperature conditions this technology is approaching readiness for integrated test with some challenging gas turbine engine applications. The intent of this paper is to share the system level thermal management benefits, basic design principles, test data, and potential applications of the Goodrich VDVP.

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

1986 ◽  
Vol 108 (2) ◽  
pp. 233-237 ◽  
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.

scholarly journals Nonlinear Volume Flow Control of a Variable Displacement Vane Pump

PAMM ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 635-636 ◽  
Author(s):  
Marius Köster ◽  
Alexander Fidlin
Keyword(s):  
Flow Control ◽  
Volume Flow ◽  
Vane Pump ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement

scholarly journals Motion of the Vane in a Variable Displacement Vane Pump. 3rd Report: Prevention of Vane Detachment by a Spring Loaded Accumulator.

1994 ◽  
Vol 25 (7) ◽  
pp. 850-856
Author(s):  
Takao NISHIUMI ◽  
Shizurou KONAMI ◽  
Teruyuki MAEDA
Keyword(s):  
Vane Pump ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement
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