Simulation and Analysis of Oil Scoop Capture Efficiency

Volume 1: Aircraft Engine; Fans and Blowers; Marine Pub Date : 2018-06-11 DOI:10.1115/GT2018-75989

Lyu Yaguo, Jiang Le, Liu Zhenxia, H. Jianping

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引用次数: 5

Abstract

Under-race lubrication is the main method for the main shaft bearing of aero-engine which with higher performance. Oil scoop is an important part of the under-race lubrication structure, which plays an important role in capturing oil coming out of a stationary jet nozzle, and the efficiency of oil capture has great influence on the performance of the under-race lubrication. In this paper, a reasonable numerical simulation method is used to calculate a certain radial oil scoop. The velocity distribution of the internal air field in the lubrication structure and the oil distribution of the oil-gas two phase flow field were calculated and the scoop efficiency under different working conditions were calculated. The scoop efficiency under the three oil jet nozzles was verified by the test data. Finally, the influence of the shaft rotation speed, the oil flow rate and the number of the oil nozzles on the scoop efficiency of the radial scoop is analyzed, and the reason of these regularities is analyzed in detail. The result of this study may provide an idea or method for the optimization and improvement of oil scoop with similar structure.

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油勺捕集效率的仿真与分析

对性能要求较高的航空发动机主轴轴承进行圈下润滑是主要的润滑方式。油勺是下圈润滑结构的重要组成部分，它对静止射流喷嘴流出的油起着重要的捕油作用，捕油效率的高低对下圈润滑性能有很大的影响。本文采用合理的数值模拟方法对某径向油斗进行了计算。计算了润滑结构内部空气场的速度分布和油气两相流场的油量分布，并计算了不同工况下的铲斗效率。试验数据验证了三种喷油喷嘴下的吸油效率。最后，分析了轴转速、油流量和油嘴数量对径向铲斗铲斗效率的影响，并详细分析了产生这些规律的原因。研究结果可为类似结构的采油斗的优化和改进提供思路和方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Volume 1: Aircraft Engine; Fans and Blowers; Marine

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