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Energies 2017, 10(1), 111; doi:10.3390/en10010111

Mixed Lubrication Effects in the Lateral Lubricating Interfaces of External Gear Machines: Modelling and Experimental Validation

Maha Fluid Power Research Center, Purdue University, Lafayette, IN 47905, USA
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Academic Editor: Enrico Sciubba
Received: 20 October 2016 / Revised: 21 November 2016 / Accepted: 9 January 2017 / Published: 19 January 2017
(This article belongs to the Special Issue Energy Efficiency and Controllability of Fluid Power Systems)
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Abstract

This article presents a novel mixed-thermoelastohydrodynamic (TEHD) model for the lateral lubricating interfaces which exist between floating lateral bushings and gears in external gear machines (EGMs). The proposed model integrates the influence of surface asperities along with the fluid structure and thermal interaction in the interface, especially in the regions of very low film thicknesses by following a stochastic approach in modelling the mixed lubrication regime. Furthermore, the current work includes validation of the predictions of the mixed-TEHD model against experimentally measured leakages from the lateral gap and compares the performance of this model with a previously developed full film TEHD model for the lateral gaps in EGMs. View Full-Text
Keywords: gear pumps; mixed lubrication; thermoelastohydrodynamic (TEHD); fluid power; hydraulics gear pumps; mixed lubrication; thermoelastohydrodynamic (TEHD); fluid power; hydraulics
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Thiagarajan, D.; Vacca, A. Mixed Lubrication Effects in the Lateral Lubricating Interfaces of External Gear Machines: Modelling and Experimental Validation. Energies 2017, 10, 111.

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