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

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...

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Bibliographic Details
Published in:Energies (Basel) 2017-01, Vol.10 (1), p.111-111
Main Authors: Thiagarajan, Divya, Vacca, Andrea
Format: Article
Language:English
Subjects:
Bushings
Computational fluid dynamics
Design
Film thickness
Floating structures
fluid power
Fluid-structure interaction
Fluids
gear pumps
Gears
hydraulics
Interfaces
Lubrication
Mathematical models
mixed lubrication
Modelling
Stochasticity
thermoelastohydrodynamic (TEHD)
Thickness
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en10010111