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Energies 2016, 9(11), 876; doi:10.3390/en9110876

Lumped Parameters Model of a Crescent Pump

Dipartimento Energia, Politecnico di Torino, 10129 Turin, Italy
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Academic Editor: Andrea Vacca
Received: 16 August 2016 / Revised: 27 September 2016 / Accepted: 18 October 2016 / Published: 26 October 2016
(This article belongs to the Special Issue Energy Efficiency and Controllability of Fluid Power Systems)

Abstract

This paper presents the lumped parameters model of an internal gear crescent pump with relief valve, able to estimate the steady-state flow-pressure characteristic and the pressure ripple. The approach is based on the identification of three variable control volumes regardless of the number of gear teeth. The model has been implemented in the commercial environment LMS Amesim with the development of customized components. Specific attention has been paid to the leakage passageways, some of them affected by the deformation of the cover plate under the action of the delivery pressure. The paper reports the finite element method analysis of the cover for the evaluation of the deflection and the validation through a contactless displacement transducer. Another aspect described in this study is represented by the computational fluid dynamics analysis of the relief valve, whose results have been used for tuning the lumped parameters model. Finally, the validation of the entire model of the pump is presented in terms of steady-state flow rate and of pressure oscillations. View Full-Text
Keywords: internal gear pump; crescent pump; modelling; fluid power internal gear pump; crescent pump; modelling; fluid power
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Rundo, M.; Corvaglia, A. Lumped Parameters Model of a Crescent Pump. Energies 2016, 9, 876.

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