高温强余旋非均匀来流条件模拟方法研究

刘云鹏; 张举星; 邸东; 颜应文

doi:10.13224/j.cnki.jasp.20220071

高温强余旋非均匀来流条件模拟方法研究

doi: 10.13224/j.cnki.jasp.20220071

南京航空航天大学能源与动力学院，南京 210016

基金项目: 国家科技重大专项（J2019-Ⅲ-0004-0047）

详细信息

作者简介:
刘云鹏（1992-），男，讲师、硕士生导师，博士，主要从事航空发动机燃烧技术、燃烧不稳定相关研究。E-mail：ypliu@nuaa.edu.cn

通讯作者:
颜应文（1978-），男，教授、博士生导师，博士，主要从事航空发动机燃烧技术相关研究。E-mail：yanyw@nuaa.edu.cn

中图分类号: V231.2
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出版历程
- 收稿日期: 2022-02-17
- 网络出版日期: 2024-04-01

Research on experimental simulation method of non-uniform inflow under high temperature and strong swirling condition

College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

摘要

摘要:
针对新一代一体化加力燃烧室进口高温强余旋非均匀进气特点，设计了一种可用于模拟一体化加力燃烧室真实进气条件的高温强余旋非均匀进口流场发生装置，该装置能够模拟真实的一体化加力燃烧室进口来流条件。同时开展了耦合进口马赫数、温度和余旋角度的不均匀流场数值模拟研究，评估了非均匀来流生成装置设计、测量方法与评价指标的有效性，并通过试验结果验证了数值模拟的准确性。结果表明，数值计算所得余旋角误差在壁面附近约为±2°，这是由于数值计算低估了壁面的耗散作用，而在中心区域则在优于±2°；同样在马赫数不均匀模拟中，在主流区域误差在10%以内；此外在对于温度不均匀性的模拟中，数值仿真表现出了较大的误差，这是因为数值计算中未考虑壁面向外界的传热过程。综合来看，本文所提出的高温强余旋非均匀生成装置可生成用于模拟下一代一体化加力燃烧室进口所面临的真实复杂不均匀进口流场条件，所采用的数值模拟方法可以较为准确的揭示流场非均匀特性。
- 一体化加力燃烧室 /
- 高温强余旋条件 /
- 非均匀进口流场发生装置 /
- 非均匀空间分布 /
- 均匀性评价指标
Abstract:
In response to the characteristics of high-temperature, strong swirl, and non-uniform inflow at the intake of the new generation integrated afterburner, a high-temperature, strong-swirl, non-uniform inlet flow field generation device that can simulate the real intake conditions of an integrated afterburner was designed. At the same time, numerical simulations of the non-uniform flow field coupling inlet Mach number, temperature, and swirl angle were conducted to assess the effectiveness of the design of the non-uniform flow generation device, measurement methods, and evaluation criteria. The accuracy of the numerical simulations was verified through experimental results. The results showed that the numerical calculation of the swirl angle error near the wall was approximately ±2° due to the underestimation of wall dissipation in the numerical calculations, while it was better than ±2° in the central area. Similarly, in the simulation of Mach number non-uniformity, the error in the mainstream area was within 10%; in addition, the simulation of temperature non-uniformity showed larger errors, due to the numerical calculations not considering the heat transfer process from the wall to the outside. Overally, the high-temperature, strong-swirl, non-uniform generation device proposed can generate the real complex non-uniform inlet flow field conditions faced by the intake of the next-generation integrated afterburner. The numerical simulation method used can reveal the flow field's non-uniform characteristics quite accurately.
- integrated afterburner /
- high temperature and strong swirling condition /
- non-uniform inflow generator /
- non-uniform space distribution /
- uniformity index

HTML

图 1 马赫数不均匀发生器结构示意图

Figure 1. Structure diagram of Mach number non-uniform generator

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图 2 温度与余旋角度耦合不均匀发生器示意图

Figure 2. Schematic diagram of temperature and co-rotation angle coupling non-uniform generator

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图 3 试验装置示意图

Figure 3. Schematic diagram of experiment device

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图 4 计算域模型示意图

Figure 4. Schematic diagram of computational domain model

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图 5 余旋角定义

Figure 5. Definition of corotation angle

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图 6 五孔探针校准特性

Figure 6. Calibration characteristics of five-hole probe

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图 7 不同高进口平均马赫数下试验（Exp.）和数值计算（CFD）余旋角分布对比

Figure 7. Comparison of experiment (Exp.) and numerical calculation (CFD) of co-rotation angle distribution under different inlet mean Mach number

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图 8 试验和数值计算径向余旋角对比曲线位置

Figure 8. Experiment and numerical calculation of radial co-rotation angle comparison curve position

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图 9 不同进口平均马赫数下径向余旋角

Figure 9. Radial co-rotation angle under different inlet mean Mach number

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图 10 不同进口平均马赫数余旋角不均匀指数对比

Figure 10. Non-uniformity index of the co-rotation angle under different inlet mean Mach number

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图 11 不同进口平均马赫数下的马赫数分布

Figure 11. Comparison of Mach number distribution under different inlet mean Mach number

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图 12 试验和数值计算径向马赫数对比曲线位置

Figure 12. Experimental and numerical calculation of radial Mach number comparison curve position

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图 13 不同进口平均马赫数下径向马赫数分布

Figure 13. Radial Mach number distribution under different inlet mean Mach number

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图 14 不同进口平均马赫数下马赫数不均匀指数

Figure 14. Mach number non-uniformity index under different inlet mean Mach number

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图 15 试验和数值计算总温分布对比

Figure 15. Comparison of total temperature distribution between experiment and numerical calculation

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表 1 工况参数

Table 1. Working condition parameters

测量截面轴向马赫数 Ma	主流进气总温/K	冷却气总温/K	主流流量/ （kg/s）	冷却气流量/ （kg/s）
0.11	400	300	0.927	0.130
0.13	400	300	1.160	0.164
0.15	400	300	1.391	0.196
0.17	400	300	1.623	0.228
0.05	500	300	0.346	0.090

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