【摘 要】
：
As the load and working environment temperature increasing,high efficiency oil lubrica-tion was urgently needed for the main bearing of aeroengine.However,the low oil capture efficiency of radial oil scoop affects the application of under-race lubrication
【机 构】
：
School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;AECC
论文部分内容阅读
As the load and working environment temperature increasing,high efficiency oil lubrica-tion was urgently needed for the main bearing of aeroengine.However,the low oil capture efficiency of radial oil scoop affects the application of under-race lubrication structure with radial oil collec-tion.In this work,a novel design of curved blade oil scoop for under-race lubrication is proposed to improve the oil capture efficiency.First of all,the principle of relative velocity optimization is pro-posed by analyzing the collision process between blade and oil jet for theoretical research.Then,the theoretical curve equations of blade inlet under three different oil jet incidence conditions are solved.After that,the monotonicity of the theoretical curves is analyzed.The effects of rotation speed,oil jet velocity,eccentric distance of oil jet,and include angle of curve are analyzed.The loca-tion of the collision points of proposed theoretical curves are also been optimized.Finally,a tran-sient Computational Fluid Dynamics (CFD) simulation of the novel oil scoop design was carried out.The simulation results show that the capture efficiency of curved blade oil scoop can be improved by 30％ comparing to the traditional design.
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