NUMERICAL SIMULATION AND OPTIMIZATION OF OIL JET LUBRICATION FOR ROTORCRAFT MESHING GEARS

作者：Dai, Y.^*; Wu, W.; Zhou, H. B.; Zhang, J.; Ma, F. Y.

来源：International Journal of Simulation Modelling, 2018, 17(2): 318-326.

DOI：10.2507/IJSIMM17(2)CO6

• Rotorcraft High-Speed Meshing Gear
• Oil Jet Lubrication
• Two-Phase Flow Numerical Simulation
• Spin-Flow Effect
• Optimal Nozzle Position Layout

Oil jet lubrication performance directly influences the operation, reliability and fatigue life of meshing gears working under high-speed and heavy-load conditions in the main reducer of rotorcraft. An oil-air two-phase mixture flow numerical simulation model for jet lubrication on the surface of a pair of meshing gears was established by the computational fluid dynamics (CFD) simulation code ANSYS/FLUENT. The effects of the spin flow caused by a high-speed rotating gear pair on the jet flow trajectory deviation were considered in the numerical simulation. The oil volume and oil pressure distribution characteristics of the meshing area were obtained and compared according to different nozzle position layouts, and the optimal nozzle position layout was determined to obtain a maximum oil volume and oil pressure. A gear-jet-lubrication experimental system was built in which the meshing surface temperatures were measured by an infrared thermometer; meanwhile, the jet flow trajectories were photographed by a high-speed camera. The experimental and numerical simulation results were mutually validated and proved the proposed optimal design scheme for the nozzle position layout.

• 出版日期2018-6
• 单位中南大学