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Title: Computational fluid dynamics simulations of windage loss in a spur gear
Authors: Aktaş, Murat Kadri
Yavuz, Mehmet A.
Ersan, Ali K.
Keywords: Gears 
spiral bevel
Issue Date: 2018
Publisher: American Society of Mechanical Engineers (ASME)
Source: Aktas, M. K., Yavuz, M. A., and Ersan, A. K. (2018, June). Computational Fluid Dynamics Simulations of Windage Loss in a Spur Gear. In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers Digital Collection.
Abstract: Windage losses arise due to the viscous dissipation of air - oil mist flow driven by the rotating faces, sides of the gears in a gearbox. The windage losses can consume up to 3% of the transmitted power. In the open literature, theoretical investigations mostly focused on the single phase (air) flow. In the present study we attempt to elucidate the complex flow physics between the gears by considering the effects of oil particles in the air flow. The goals of this work is to develop a physical understanding of the aerodynamics of gear windage loss. A spur gear geometry was considered, for which experimental and theoretical data are available. A commercial Computational Fluid Dynamics algorithm (CFD++) was utilized for the numerical simulations. The first group of simulations were performed for a single phase (air) flow in order to validate the numerical approach. The results showed good agreement with the experiment. Various shrouding configurations and free spinning cases are studied at different rotation speeds of the gear. The effects of the oil droplets on the windage losses were quantified.
Description: ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT (2018: Oslo, Norway)
ISBN: 978-079185101-2
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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