Abstract
A multi-scale computational model has been developed for application to the micro- and macro-scale thermo-fluid-dynamics in high speed gear systems. At the micro-space/time-scale, a model of gear mesh lubrication film transport and heating is presented based on elastohydrodynamic lubrication (EHL) tribology and mesh kinematics. At the macro-space/time-scale, computational fluid dynamics (CFD) tools are used to resolve the time-dependent conduction and convection (windage) processes within the gears and gearbox. Scale-spanning averaging procedures were developed for coupling the instantaneous meshing and macro scale physics. The overall method is presented and applied to an equilibrium mist-lubricated gearbox configuration tested at the NASA Glenn Research Center.
Original language | English (US) |
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Pages (from-to) | 2203-2214 |
Number of pages | 12 |
Journal | Annual Forum Proceedings - AHS International |
Volume | 3 |
State | Published - 2013 |
Event | 69th American Helicopter Society International Annual Forum 2013 - Duration: May 21 2013 → May 23 2013 |
All Science Journal Classification (ASJC) codes
- General Engineering