A multi-scale computational framework for modeling the thermo-fluid- dynamics of high speed gearbox systems

Qingtao Yu, Sean McIntyre, Robert Kunz, Zihni Saribay, Robert Bill

Research output: Contribution to journalConference article

5 Scopus citations

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 languageEnglish (US)
Pages (from-to)2203-2214
Number of pages12
JournalAnnual Forum Proceedings - AHS International
Volume3
StatePublished - Sep 9 2013
Event69th American Helicopter Society International Annual Forum 2013 -
Duration: May 21 2013May 23 2013

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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