Affiliation:
1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
Abstract
Windage power loss plays a leading role in the total power loss of high-speed gears, which seriously affects the transmission efficiency of gear systems and leads to high energy consumption. This paper proposes a negative pressure regulation method to reduce windage power loss. Based on the computational fluid dynamics theory, the flow field distribution and windage power loss in the gearbox under different negative pressure conditions are studied, and the effect of the negative pressure environment and speed on the windage power loss is obtained. In order to further save calculation costs, an optimization algorithm of the BP neural network based on a genetic algorithm is proposed to effectively predict the windage power loss. The results show that the high-speed airflow near the tooth’s surface will produce a large pressure moment, which is the main cause of wind resistance loss. The windage power loss increases with the increase in the negative pressure or speed of the gearbox, but the effect of speed is more obvious. The prediction results of the optimization algorithm are in good agreement with the finite element simulation data and the open literature, which can predict the best parameters for reducing windage power loss.
Funder
National Key Research and Development Program of China
The National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province of China
The Open Research Fund of State Key Laboratory of High Performance Complex Manufacturing, Central South University
Postgraduate Research & Practice Innovation Program of NUAA
Subject
Process Chemistry and Technology,Chemical Engineering (miscellaneous),Bioengineering
Reference34 articles.
1. CFD modelling and numerical simulation on windage power loss of aeronautic high-speed spiral bevel gears;Zhu;Simul. Model. Pract. Theory,2020
2. Dai, Y., Ma, F., Zhu, X., and Jia, J. (2019). Numerical simulation investigation on the windage power loss of a high-speed face gear drive. Energies, 12.
3. Numerical investigation on windage losses of high-speed gears in enclosed configuration;Fondelli;AIAA J.,2018
4. Zhang, Y., Hou, X., Zhang, H., and Zhao, J. (2022). Numerical simulation on windage power loss of high-speed spur gear with baffles. Machines, 10.
5. Concli, F., and Gorla, C. (2013, January 24–25). Analysis of the power losses in geared transmissions–measurements and CFD calculations based on open source codes. Proceedings of the Open Source CFD International Conference 2013, Hamburg, Germany.