航空弧齿锥齿轮副风阻功率损失分析与优化

张旭阳; 王三民; 李林林; 刘琳琳; 任鸿飞

doi:10.13224/j.cnki.jasp.20210211

航空弧齿锥齿轮副风阻功率损失分析与优化

doi: 10.13224/j.cnki.jasp.20210211

西北工业大学机电学院，西安 710072

详细信息

作者简介:
张旭阳（1999-），男，硕士生，主要从事弧齿锥齿轮动力学及流体动力学研究

中图分类号: V232.8
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- 文章访问数: 189
- HTML浏览量: 30
- PDF量: 64
- 被引次数: 0
出版历程
- 收稿日期: 2021-05-01
- 网络出版日期: 2023-02-10

Analysis and optimization of windage power loss for aeronautical spiral bevel gear pair

School of Mechanical Engineering，Northwestern Polytechnical University，Xi’an 710072，China

摘要

摘要:
基于CFD理论，利用Fluent求解软件，借助超级计算机强大的并行运算能力对航空弧齿锥齿轮副风阻功率损失进行仿真计算。采用局部综合法建立弧齿锥齿轮副三维模型，选用RNG k-ε湍流模型，考虑平均流动中的旋流流动情况，与标准k-ε模型相比，RNG通过修正湍流黏度并很好地处理了高应变率以及流线弯曲程度较大的流动。齿轮边界运动通过UDF（user-defined functions）函数驱动，同时采用动网格模拟流场形状由于边界运动而随时间改变问题。最后得出无挡风罩和不同挡风罩配置下的齿轮副风阻功率损失，证实了合理安装挡风罩能够有效降低齿轮风阻损失，并分析多组仿真实验间的减速器内流场压力、速度、湍流动能云图变化，得出了最优化的挡风罩配置，以求最小化风阻功率损失，文中减阻效果最好的挡风罩能降低55.3%的齿轮风阻损失，此时挡风罩间隙为1 mm，为工程实际应用挡风罩的设计提供了参考。
- 风阻功率损失 /
- 弧齿锥齿轮副 /
- 计算流体动力学 /
- 挡风罩 /
- 湍流模型
Abstract:
Based on CFD theory, the windage power loss of aviation spiral bevel gear pair was simulated by using Fluent solution software with the powerful parallel computing ability of supercomputer. The three-dimensional model of spiral bevel gear pair was established by local synthesis method. The turbulence model of RNG k-ε was selected to consider the swirl flow in the average flow. Compared with the standard k-ε model, the turbulence viscosity of RNG was corrected and the flow with high strain rate and large curvature of the flow line was well treated. The gear boundary motion was driven by UDF (user-defined functions) functions, and the change of flow field shape over time due to boundary motion was simulated by dynamic grid. Finally, the windage power loss of the gear pair with different shroud configurations was obtained. It is confirmed that the reasonable installation of the shroud can effectively reduce the gear windage loss, and the variations of cloud images of the flow field pressure, velocity and turbulent kinetic energy in the gearbox between several groups of simulation tests were analyzed, and the optimal shroud configuration was obtained to minimize the windage power loss. The shroud with the best drag reduction effect can reduce the gear windage loss by 55.3%, and the shroud clearance is 1 mm in this case, providing a reference for the design of shroud in engineering practice.
- windage power loss /
- spiral bevel gear pair /
- CFD /
- shroud /
- turbulence model

HTML

图 1 弧齿锥齿轮副

Figure 1. Spiral bevel gear pair

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图 2 从动轮挡风罩

Figure 2. Shroud for driven wheel

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图 3 无挡风罩齿轮副风阻功率损失计算流场模型

Figure 3. Flow field model for calculating windage power loss of gear pair unshrouded

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图 4 有挡风罩齿轮副风阻功率损失计算流场模型

Figure 4. Flow field model for calculating windage power loss of gear pair shrouded

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图 5 挡风罩与从动轮间的配置参数

Figure 5. Configuration parameters between shroud and gear

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图 6 风阻力矩在齿轮副上的作用位置

Figure 6. Position of the wind resistance moment on the gear pair

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图 7 从动轮压力云图

Figure 7. Pressure cloud image of gear

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图 8 X-Y剖面速度云图

Figure 8. X-Y section velocity cloud map

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图 9 湍流动能云图

Figure 9. Cloud image of turbulent kinetic energy

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图 10 弧齿锥齿轮副风阻功率损失图

Figure 10. Spiral bevel gear pair windage power loss diagram

下载: 全尺寸图片幻灯片

表 1 弧齿锥齿轮基本参数

Table 1. Basic parameters of spiral bevel gear

参数	主动轮	从动轮
齿数z	30	76
转速n/（r/min）	20900	7626
大端模数m_t/mm	3.85	3.85
压力角α_n/（°）	20	20
螺旋角β/（°）	30	30
齿宽B/mm	38.5	38.5
轴交角σ/（°）	69.77
旋向	右	右
分度圆直径D/mm	103.95	284.9

下载: 导出CSV

表 2 不同配置下的风阻功率损失

Table 2. Windage power loss in different configurations

实验号	间隙/ mm	开度/ （°）	风阻力矩/（N·m）		风阻功率损失/W
实验号	间隙/ mm	开度/ （°）	小轮	大轮	风阻功率损失/W
1	无	无	0.422	2.23	2704.3936
2	7	45	0.405	1.60	2164.0946
3	7	60	0.370	1.50	2019.4667
4	5	45	0.408	1.40	2010.9487
5	5	60	0.406	1.45	2045.8487
6	1	45	0.397	0.997	1665.0544
7	1	60	0.408	1.13	1795.3378

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表 3 齿轮齿面、端面和轴面各自的风阻功率损失

Table 3. Windage power loss of gear tooth face, end face and shaft face respectively

实验号	齿面风阻/W	端面风阻/W	轴面风阻/W	总风阻损失/W
1	1892.81	757.12	54.47	2704.39
2	1493.16	519.36	151.57	2164.09
3	1473.87	464.37	81.23	2019.47
4	1398.96	502.50	109.49	2010.95
5	1473.01	339.90	122.94	2045.85
6	1182.15	382.95	99.95	1665.05
7	1238.78	284.90	271.66	1795.34

下载: 导出CSV

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