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浙江大学学报(工学版)
浙江大学学报(工学版)  2023, Vol. 57 Issue (11): 2337-2344    DOI: 10.3785/j.issn.1008-973X.2023.11.021
航空航天技术     
中央传动齿轮箱复杂油路性能仿真
吴超琦(),罗健,周莹,娄鹏,尉玉
中国航发商用航空发动机有限责任公司，上海 200241
Performance simulation of complex oil circuit of inlet gearbox
Chao-qi WU(),Jian LUO,Ying ZHOU,Peng LOU,Yu YU
AECC Commercial Aircraft Engine Co. Ltd, Shanghai 200241, China
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摘要：

以某航空发动机中央传动齿轮箱复杂油路结构为研究对象，分别对“双通道多喷嘴”和“单通道多喷嘴”油路模型进行三维流动仿真分析并建立压力-体积流量数学模型. 计算结果表明：Realizable k-ε湍流模型能够有效捕捉“双通道多喷嘴”复杂油路结构的三维流动特性，滑油喷嘴喷孔的外部流线喷射位置和试验现象较吻合，计算精度较高；对供油压力为0.05~0.25 MPa的压力-体积流量曲线采用“外延法”方式，能够较好地预测供油压力为0.30 MPa时的体积流量，该值与仿真计算结果和设计要求均较吻合；随着油路入口供油压力增加，所有滑油喷嘴体积流量系数也增加，滑油喷嘴体积流量系数和油路内滑油雷诺数呈正相关关系；当供油压力为0.05~0.30 MPa时，“单通道多喷嘴”复杂油路模型的供油压力和体积流量呈二次函数关系.
关键词： 航空发动机;  齿轮箱;  复杂油路;  外延法;  体积流量系数    
Abstract:

A complex oil circuit structure of inlet gearbox of an aeroengine was taken as as the research object. The oil circuit models of two-channel multi nozzle and one-channel multi nozzle were simulated and analyzed respectively and the pressure-oil volume flow rate model was established. The calculation results showed that the Realizable k-ε turbulence model can effectively capture the three-dimensional flow characteristics of the complex oil circuit structure of two-channel multi nozzle. The external streamline injection position of the oil nozzle orifice was in good agreement with the experimental phenomenon. The calculation accuracy was high. The extension method was used to predict the oil volume flow rate under the oil supply pressure of 0.30 MPa for the pressure-oil volume flow rate curve with the oil supply pressure of 0.05 MPa to 0.25 MPa. This value was in good agreement with the simulation calculation results and design requirements. As the oil supply pressure at the inlet of the oil circuit increased, oil volume flow coefficient of of oil nozzles also increased. Oil volume flow coefficient of the oil nozzles was positively correlated with the Reynolds number. When the oil supply pressure was 0.05 MPa to 0.30 MPa, the oil supply pressure and oil volume flow rate of the one-channel multi nozzle complex oil circuit model were quadratic functions.
Key words: aero-engine    gearbox    complex oil circuit    extension method    oil volume flow coefficient
收稿日期: 2023-01-20 出版日期: 2023-12-11
CLC:  V 233.4  
基金资助: 国家自然科学基金资助项目（MJ-2017-D-24）
作者简介: 吴超琦（1989—），男，工程师，硕士，从事航空发动机滑油系统研究. orcid.org/0000-0001-6369-6189. E-mail： wcqecust@163.com
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吴超琦
罗健
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尉玉

引用本文:

吴超琦,罗健,周莹,娄鹏,尉玉. 中央传动齿轮箱复杂油路性能仿真[J]. 浙江大学学报(工学版), 2023, 57(11): 2337-2344.

Chao-qi WU,Jian LUO,Ying ZHOU,Peng LOU,Yu YU. Performance simulation of complex oil circuit of inlet gearbox. Journal of ZheJiang University (Engineering Science), 2023, 57(11): 2337-2344.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2023.11.021    或    https://www.zjujournals.com/eng/CN/Y2023/V57/I11/2337

图 1  中央传动齿轮箱的供油模型
图 2  油路模型流体域与体网格
管流段序号 dp/mm Lp/mm
管流段1 14.5 179.28
管流段2 11.3 363.46
管流段3 11.3 749.54
管流段4 11.3 246.74
表 1  “双通道多喷嘴”油路模型管流段信息
喷嘴序号 喷孔序号 dn/mm Ln/dn
喷嘴1 — 1.6 2.49
喷嘴2 — 0.8 2.47
喷嘴3 — 1.8 2.28
喷嘴4 — 1.8 2.28
喷嘴5 喷孔1 2.3 4.57
喷孔2 2.3 4.57
喷孔3 2.0 4.25
喷嘴6 喷孔4 2.3 4.57
喷孔5 2.3 4.57
喷孔6 2.0 4.25
表 2  “双通道多喷嘴”油路模型滑油喷嘴信息
p/MPa qV/(L·min?1) e/%
计算结果 试验结果
0.05 12.57 12.1 3.88
0.10 18.31 18.0 1.72
0.15 22.77 22.1 3.03
0.20 26.55 26.0 2.12
0.25 29.84 29.4 1.50
表 3  不同供油压力下体积流量计算和试验结果的对比
图 3  齿轮啮合区和传动杆花键处的外部流线
图 4  “双通道多喷嘴”油路模型的内部流线
图 5  “双通道多喷嘴”油路模型的喷孔外部流线
图 6  油路模型喷孔外部流线喷射位置
图 7  “双通道多喷嘴”油路模型的压力分布
部位 Δp/kPa pro/%
管流段1 1.65 0.14
管流段2 16.33 1.41
管流段3 23.81 2.05
管流段4 1.21 0.11
喷嘴1 291.16 25.09
喷嘴5 267.25 23.03
喷嘴6 265.67 22.90
机匣喷嘴 293.16 25.27
表 4  “双通道多喷嘴”油路模型的压力损失比例
图 8  不同供油压力下的体积流量系数
图 9  体积流量随供油压力变化的外延曲线
图 10  “单通道多喷嘴”油路模型压力分布和内部流线
图 11  体积流量随供油压力变化的拟合曲线
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