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

Divya Thiagarajan and Andrea Vacca
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Divya Thiagarajan: Maha Fluid Power Research Center, Purdue University, Lafayette, IN 47905, USA
Andrea Vacca: Maha Fluid Power Research Center, Purdue University, Lafayette, IN 47905, USA

Energies, 2017, vol. 10, issue 1, 1-20

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.

Keywords: gear pumps; mixed lubrication; thermoelastohydrodynamic (TEHD); fluid power; hydraulics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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