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A windage power loss model based on CFD study about the volumetric flow rate expelled by spur gears

Published online by Cambridge University Press:  22 November 2012

Sylvain Pallas ,
Yann Marchesse ,
Christophe Changenet ,
Fabrice Ville  and
Philippe Velex
Sylvain Pallas
Affiliation:
Universitéde Lyon, ECAM Lyon, Laboratoire d’Énergétique, 40 montée Saint-Barthélemy, 69005 Lyon, France
Yann Marchesse*
Affiliation:
Universitéde Lyon, ECAM Lyon, Laboratoire d’Énergétique, 40 montée Saint-Barthélemy, 69005 Lyon, France
Christophe Changenet
Affiliation:
Universitéde Lyon, ECAM Lyon, Laboratoire d’Énergétique, 40 montée Saint-Barthélemy, 69005 Lyon, France
Fabrice Ville
Affiliation:
Université de Lyon, CNRS, INSA-Lyon, LaMCoS UMR 5259, 18–20 rue des Sciences, 69621 Villeurbanne, France
Philippe Velex
Affiliation:
Université de Lyon, CNRS, INSA-Lyon, LaMCoS UMR 5259, 18–20 rue des Sciences, 69621 Villeurbanne, France
*
a Corresponding author: yann.marchesse@ecam.fr
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Abstract

This paper investigates the windage power losses generated by spur gears rotating in pure air by using a computational fluid dynamics (CFD) code. The three-dimensional simulations are at first validated comparing CFD predictions with the power losses measured in similar conditions from other investigations. The volumetric flow rate which is expelled by the teeth is then analysed, and a correlation which is based on a classical approach used in turbomachinery is finally proposed which makes it possible to estimate windage losses for spur gears. It was observed that this latter approach seems satisfying since the formulation of the volumetric flow rate which is employed in the model is appropriate to each gear.

Keywords

Spur gearswindage power lossCFDcorrelationDenture droitepertes par ventilationCFDmodèle
Type
Research Article
Information
Mechanics & Industry , Volume 13 , Issue 5 , 2012 , pp. 317 - 323
Copyright
© AFM, EDP Sciences 2012

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References

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