LIU Zehao,KANG Min,FEI Xiuguo,et al. Analysis and optimisation of windage power loss of high-speed cylindrical helical gear pair[J]. Journal of Mechanical Transmission,2025,49(9):85-92.
LIU Zehao,KANG Min,FEI Xiuguo,et al. Analysis and optimisation of windage power loss of high-speed cylindrical helical gear pair[J]. Journal of Mechanical Transmission,2025,49(9):85-92. DOI: 10.16578/j.issn.1004.2539.2025.09.011.
Analysis and optimisation of windage power loss of high-speed cylindrical helical gear pair
To investigate the windage power loss of the driving gear in a helical cylindrical gearbox under the working conditions of 1 500-2 500 r/min without a shroud and with different shroud parameters at 2 000 r/min
the nephograms of velocity and turbulent kinetic energy inside the gearbox were analyzed.
Methods
2
Based on computational fluid dynamics (CFD) method
a simplified model of a high-speed helical cylindrical gearbox was established. The RNG
k-ε
turbulence model was adopted
and the gear boundary was driven by a user-defi
ned function (UDF) to control the rotational speed and direction of the gear pair. The dynamic mesh model was used to dynamically modify the mesh structure in the computational domain for simulating actual working conditions.
Results
2
The results show that the gear rotational speed has a significant impact on windage power loss. The gear shroud can effectively reduce the windage power loss of high-speed helical cylindrical gears
and the smaller the radial and axial clearances
the more remarkable the optimisation effect. However
for helical cylindrical gear pairs
excessively small clearances may aggravate the flow field motion in the meshing area
thereby increasing the windage power loss. This study provides reference for the design of shrouds in engineering applications.
关键词
Keywords
references
DING H , LI H P , SHAO W , et al . Prediction and control for local bearing contact-based collaborative grinding of non-orthogonal aerospace spiral bevel gears [J]. Mechanical Systems and Signal Processing , 2021 , 160 : 107841 .
SEETHARAMAN S . An investigation of load-independent power losses of gear systems [D]. Columbus : The Ohio State University , 2009 : 75 - 77 .
ZHANG Hong , HUANG Bo , DING Yiqun , et al . Analysis of high speed gearbox oil injection lubrication under negative pressure based on the CFD [J]. Journal of Mechanical Transmission , 2024 , 48 ( 5 ): 16 - 23 .
WANG Lin , ZHAN Yeqing , LIU Lulu . Study on spray lubrication of high-speed double helical gear pairs [J]. Mechanical Science and Technology for Aerospace Engineering , 2019 , 38 ( 11 ): 1641 - 1646 .
FU Xiuqing , LIU Wei , FEI Xiuguo , et al . Theoretical calculation and experimental study on the transmission efficiency of high-speed gearbox [J]. Machine Design and Manufacturing Engineering , 2018 , 47 ( 12 ): 83 - 86 .
DAWSON P H . Windage loss in larger high-speed gears [J]. Proceedings of the Institution of Mechanical Engineers,Part A:Power and Process Engineering , 1984 , 198 ( 1 ): 51 - 59 .
MARCHESSE Y , CHANGENET C , VILLE F , et al . Investigations on CFD simulations for predicting windage power losses in spur gears [J]. Journal of Mechanical Design , 2011 , 133 ( 2 ): 024501 .
JIA Qingjian , ZHAO Ning . Research on windage power loss in high speed spur gear [J]. Journal of Mechanical Transmission , 2012 , 36 ( 10 ): 20 - 24 .
WU Luji , YANG Linjie , LI Yufeng , et al . Analysis of power loss of high-speed gearbox with light load [J]. Journal of Mechanical Transmission , 2014 , 38 ( 5 ): 118 - 120 .
LIANG Zuobin , DU Jiajia , GUO Mei . Simulation of gear windage losses and its application [J]. Journal of Aerospace Power , 2017 , 32 ( 6 ): 1419 - 1424 .
MO Shuai , DANG Heyu , ZOU Zhenxing , et al . Research on windage power loss of high-speed arc tooth cylindrical gear [J]. Journal of Mechanical Transmission , 2021 , 45 ( 4 ): 1 - 6 .
LIU Ruirui . Windage analysis and oil jet lubrication simulation of high speed double helicalstar gear system [D]. Chongqing : Chongqing University , 2021 : 9 - 10 .
PENG Qianlei , GUI Liangjin , FAN Zijie . Gear splash lubrication numerical simulation and validation based on teeth-face-moving method [J]. Transactions of the Chinese Society of Agricultural Engineering , 2015 , 31 ( 10 ): 51 - 56 .