Analysis and optimization of windage power loss for aeronautical spiral bevel gear pair

被引：0
|
作者：
Zhang X. [1 ]
Wang S. [1 ]
Li L. [1 ]
Liu L. [1 ]
Ren H. [1 ]
机构：
[1] School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2023年 / 38卷 / 04期
关键词：
CFD; shroud; spiral bevel gear pair; turbulence model; windage power loss;
D O I：
10.13224/j.cnki.jasp.20210211
中图分类号：
学科分类号：
摘要：
Based on CFD theory, the windage power loss of aviation spiral bevel gear pair was simulated by using Fluent solution software with the powerful parallel computing ability of supercomputer. The three-dimensional model of spiral bevel gear pair was established by local synthesis method. The turbulence model of RNG k-ε was selected to consider the swirl flow in the average flow. Compared with the standard k-ε model, the turbulence viscosity of RNG was corrected and the flow with high strain rate and large curvature of the flow line was well treated. The gear boundary motion was driven by UDF (user-defined functions) functions, and the change of flow field shape over time due to boundary motion was simulated by dynamic grid. Finally, the windage power loss of the gear pair with different shroud configurations was obtained. It is confirmed that the reasonable installation of the shroud can effectively reduce the gear windage loss, and the variations of cloud images of the flow field pressure, velocity and turbulent kinetic energy in the gearbox between several groups of simulation tests were analyzed, and the optimal shroud configuration was obtained to minimize the windage power loss. The shroud with the best drag reduction effect can reduce the gear windage loss by 55.3%, and the shroud clearance is 1 mm in this case, providing a reference for the design of shroud in engineering practice. © 2023 BUAA Press. All rights reserved.
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页码：976 / 985
页数：9
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