转静盘腔螺栓结构风阻温升特性研究与公式构造

谢仙赐; 孙丹; 任国哲; 周建军; 赵义祯; 卢德正

doi:10.13224/j.cnki.jasp.20240482

转静盘腔螺栓结构风阻温升特性研究与公式构造

doi: 10.13224/j.cnki.jasp.20240482

谢仙赐^{1, 2,},
孙丹^{1, 2,*, ,},
任国哲^{1, 2},
周建军³,
赵义祯³,
卢德正^{1, 2}

1.
沈阳航空航天大学航空发动机学院辽宁省航空推进系统先进测试技术重点实验室，沈阳 110136
2.
沈阳航空航天大学沈阳市透平机械先进密封技术重点实验，沈阳 110136
3.
中国航发沈阳发动机研究所，沈阳 110015

基金项目: 国家自然科学基金（52375195，52475206）

详细信息

作者简介:
谢仙赐（2001-），女，博士生，主要从事航空发动机密封流动换热与动力特性研究。E-mail：2768758200@qq.com

通讯作者:
孙丹（1981-），男，教授，博士，主要从事航空发动机先进密封技术研究。E-mail：phd-sundan@163.com

中图分类号: V233.5
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出版历程
- 收稿日期: 2024-07-17
- 网络出版日期: 2024-12-18

Research and formula construction on wind resistance temperature rise characteristics of the bolt structure on rotor-stator cavity

XIE Xianci^{1, 2
,},
SUN Dan^{1, 2,*
, ,},
REN Guozhe^{1, 2},
ZHOU Jianjun³,
ZHAO Yizhen³,
LU Dezheng^{1, 2}

1.
Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System，School of Aero-engine，Shenyang Aerospace University，Shenyang 110136，China
2.
Key Laboratory of Turbomachinery Advanced Seal Technology，Shenyang Aerospace University，Shenyang 110136，China
3.
Shenyang Engine Research Institute，Aero Engine Corporation of China，Shenyang 110015，China

摘要

摘要:
分析转静盘腔螺栓结构风阻温升特性理论模型，建立转静盘腔螺栓结构风阻温升特性数值求解模型，在验证求解模型准确性的基础上，分析转静盘腔内部流场特性，研究工况参数和结构参数对转静盘腔螺栓结构风阻温升的影响规律，采用修正系数法构造转静盘腔螺栓结构风阻温升理论公式。研究结果表明：螺栓在随旋转圆盘旋转时，螺栓表面与黏性气流相互作用，使得气体温度升高，产生风阻温升效应；在本文研究工况下，转速从6000 r/min增大到15000 r/min时，螺栓结构风阻加热系数增大24.2%；入口流量由2.2 g/s增大到8.0 g/s，螺栓结构风阻加热系数降低51.5%；螺栓个数由6增大到36时，螺栓结构风阻加热系数增大65.1%；构造的转静盘腔螺栓结构风阻温升理论公式能够准确计算转静盘腔螺栓引起的风阻温升，为转静盘腔螺栓结构风阻温升特性分析提供理论依据。
- 螺栓结构 /
- 转静盘腔 /
- 风阻温升 /
- 风阻力矩 /
- 公式构造
Abstract:
The theoretical model of the windage resistance heating characteristics of the bolt structure in the rotor-stator cavity was analyzed. A numerical solution model for windage resistance heating characteristics of the bolt structure in the rotor-stator cavity was established to analyze the internal flow field characteristics of the rotor-stator cavity and study the influences of structural and operating parameters on windage resistance heating of the bolt structure in the rotor-stator cavity on the basis of verifying the accuracy of the solution model. The theoretical formula for windage resistance heating of the bolt structure in the rotor-stator cavity was constructed using the correction coefficient method. The research results indicated that when the bolt rotated with the rotating disc, the surface of the bolt interacted with the viscous airflow through friction, and the temperature of the gas increased, resulting in windage resistance heating effect. Under the working conditions studied in this article, when the speed increased from 6000 r/min to 15000 r/min, the wind resistance temperature rise coefficient of the bolt structure increased by 24.2%; the inlet flow rate increased from 2.2 g/s to 8.0 g/s, and the wind resistance temperature rise coefficient of the bolt structure decreased by 51.5%; when the number of bolts increased from 6 to 36, the wind resistance temperature rise coefficient of the bolt structure increased by 65.1%; the theoretical formula for windage resistance heating was caused by the bolt structure of the rotor-stator cavity, which can accurately calculate windage resistance heating caused by the bolt structure of the rotor-stator cavity. This article has provided a theoretical basis for the analysis of windage resistance heating characteristics of the bolt structure of the rotor-stator cavity.
- bolt structure /
- rotor-stator cavity /
- wind resistance temperature rise /
- wind resistance torque /
- formula construction

HTML

图 1 航空发动机卸荷腔结构示意图

Figure 1. Schematic diagram of rotating disc cavity of aero-engine

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图 2 压气机卸荷腔结构研究模型

Figure 2. Calculation model of compressor unloading chamber structure

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图 3 求解模型

Figure 3. Resolution model

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图 4 网格划分

Figure 4. Gird division

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图 5 网格数量对泄漏量和风阻温升的影响

Figure 5. Influences in leakage and windage resistance heating with grids

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图 6 螺栓结构风阻力矩计算模型

Figure 6. Calculation model for wind resistance torque of bolt structure

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图 7 风阻力矩数值计算结果与实验结果对比

Figure 7. Comparison of numerical calculation results and experimental results of wind resistance torque

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图 8 风阻温升准确性验证模型

Figure 8. Verification model for accuracy of wind resistance temperature rise

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图 9 风阻温升数值计算结果与实验结果对比

Figure 9. Comparison of numerical calculation results and experimental results of wind resistance temperature rise of bolt structure

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图 10 转静盘腔内部流场流线图

Figure 10. Velocity streamline diagram of the internal flow field in the rotor-stator cavity

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图 11 转静盘腔内部流场速度矢量图

Figure 11. Speed vector diagram of the internal flow field in the rotor-stator cavity

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图 12 转静盘腔内部流场压力变化云图

Figure 12. Pressure variation diagram of the internal flow field in the rotor-stator cavity

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图 13 转静盘腔内部流场温度云图

Figure 13. Temperature diagram of the internal flow field in the rotational disc cavity

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图 14 无量纲系数随入口流量的变化曲线

Figure 14. Effect of inlet mass flow on dimensionless coefficient

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图 15 无量纲系数随转速变化曲线

Figure 15. Effect of rotational speed on dimensionless coefficient

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图 16 风阻温升和风阻力矩随螺栓个数变化曲线

Figure 16. Effect of the number of bolts on windage heat and wind resistance torque

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图 17 螺栓结构风阻力矩理论结果与数值结果对比

Figure 17. Comparison of theoretical result and numerical result of the wind resistance torque for bolt structures

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图 18 螺栓结构风阻温升公式计算结果与仿真结果对比

Figure 18. Comparison between the calculation results and simulation results of the wind resistance temperature rise formula for bolt structures

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表 1 模型主要几何尺寸表

Table 1. Main geometric dimensions of the model

结构参数	数值
齿数	5.0
齿距/mm	4.5
齿高/mm	4.8
齿宽/mm	0.3
前倾角/（°）	10.0
后倾角/（°）	10.0
螺栓边长/mm	5.8
螺栓高度/mm	13.0
转子半径/mm	247.0
螺栓旋转半径/mm	207.5

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表 2 设置参数

Table 2. Setup parameters

参数及边界条件	数值及详情
入口总压/Pa	（1.2～2.0）×101325（约1.2～2.0个大气压）
出口静压/10⁵ Pa	1.01325
转速/（r/min）	6000～15000
入口总温/K	298.15
湍流模型	SST（shear stress transfer） k-ω湍流模型
流体介质	理想气体
其他边界条件	旋转周期边界

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表 3 不同螺栓个数下β值

Table 3. β value under different numbers of bolts

螺栓数量	β
6	0.45
12	0.69
18	0.76
24	1.00
36	1.01

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参考文献(26)

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