https://doi.org/10.1140/epjp/s13360-023-03653-7
Regular Article
Impulse power loss in orthogonal face gear–numerical and experimental results
1
College of Mechanical and Electrical Engineering, Central South University, 410083, Changsha, China
2
Hunan Aviation Powerplant Research Institute, AECC, 412002, Zhuzhou, China
Received:
15
October
2022
Accepted:
2
January
2023
Published online:
26
January
2023
Power losses in face gear drive result from the sliding and rolling friction, the pumping/squeezing of air–oil mixture during the meshing process, the dragging of air/air–oil mixture surrounding the rotating gears (windage effect), the lubrication process (the splashing of oil for dip lubrication or impacting for jet lubrication). The objective of this paper is to present the results of theoretical analysis and computational simulations done in parallel with preliminary experimental simulations on the prediction of impulse power loss. Experiments were carried out on an ad hoc designed test rig whose face gear is driven by a high-speed motor with recording the velocity and torque by a dynamic torque sensor. Results are obtained for the face gear system with the rotating speed changing from 0 to 3023 r/min, the jet velocity ranging from 9.63 to 16.2 m/s. Two different analysis approaches have been introduced to estimate the impacting power loss of oil jet flow on the gear surface: (a) an analytical model considering the momentum transfer between the oil flow and the tooth surface; (b) a CFD method describing the fluid field characteristics of impact behavior. It is suggested that both approaches agree well with the experimental evidence on the prediction of the impulse power loss of face gears under jet lubrication.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
