Gap Flow Simulation Methods in High Pressure Variable Displacement Axial Piston Pumps

High pressure variable displacement axial piston pumps are subject to complex dynamic phenomena. Their analysis is difficult, additionally complicated by leakage of the working fluid. Analytically gap flow is calculated with the Reynolds equation which describes the pressure distribution in a thin l...

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Bibliographic Details
Published in:Archives of computational methods in engineering Vol. 24; no. 3; pp. 519 - 542
Main Authors: Zawistowski, Tomasz, Kleiber, Michał
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01.07.2017
Springer Nature B.V
Subjects:
Aspect ratio
Axial flow pumps
Computational fluid dynamics
Computer simulation
Engineering
Flow simulation
Flow velocity
Fluid flow
Lubrication
Mathematical analysis
Mathematical and Computational Engineering
Mathematical models
Original Paper
Piston pumps
Pressure distribution
Pumps
Reynolds equation
Stress concentration
Piston Pump
Reynolds Equation
Pressure Port
Computational Fluid Dynamic
Volumetric Flow Rate
ISSN:1134-3060, 1886-1784, 1886-1784
Online Access:Get full text
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Summary:High pressure variable displacement axial piston pumps are subject to complex dynamic phenomena. Their analysis is difficult, additionally complicated by leakage of the working fluid. Analytically gap flow is calculated with the Reynolds equation which describes the pressure distribution in a thin lubricating layer. The paper presents various approaches to analyze gap flow both in traditional axial piston pump and novel type of hydraulic pump, designed at the Polish Gdansk Institute of Technology. Because of large aspect ratio between the height of the gap and the size of pump elements, the authors present the numerical simulation approach using a local model to define a lubrication gap, linked to a global model of a pump from which boundary conditions were imported. User defined functions implemented in Fluent and Excel were used to calculate the pressure and velocity fields and assess the fluid flow rate.
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ISSN:1134-3060
1886-1784
1886-1784
DOI:10.1007/s11831-016-9180-5