基于流固耦合的反推力装置负载特性

谢容璋; 苏三买; 杨恒辉; 高吴浩

doi:10.13224/j.cnki.jasp.20210740

基于流固耦合的反推力装置负载特性

doi: 10.13224/j.cnki.jasp.20210740

谢容璋^{1, 4,},
苏三买^1,*, ,,
杨恒辉²,
高吴浩³

1.
西北工业大学动力与能源学院，西安 710072
2.
中国航空工业集团有限公司西安航空计算技术研究所，西安 710068
3.
西安电子科技大学机电工程学院，西安 710071
4.
中国人民解放军第 5719工厂，成都 611936

详细信息

作者简介:
谢容璋（1996-）男，硕士生，主要从事航空发动机排气系统流场仿真研究。E-mail：rongzhang_xie@mail.nwpu.edu.cn

通讯作者:
苏三买（1968-）男，副教授，博士，主要从事航空发动机控制建模与仿真研究。E-mail：microeng@nwpu.edu.cn

中图分类号: V228.7
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出版历程
- 收稿日期: 2021-12-31
- 网络出版日期: 2023-07-05

Load characteristics of thrust reverser based on fluid-structure coupling method

XIE Rongzhang^{1, 4
,},
SU Sanmai^{1,*
, ,},
YANG Henghui²,
GAO Wuhao³

1.
School of Power and Energy，Northwestern Polytechnical University. Xi’an 710072，China
2.
Xi’an Aeronautics Computing Technique Research Institute， Aviation Industry Corporation of China Limited，Xi’an 710068，China
3.
School of Mechano-Electronic Engineering，Xidian University，Xi’an 710071，China
4.
The 5719 Factory，People’s Liberation Army，Chengdu 611936，China

摘要

摘要:
反推力装置负载特性是其运动机构及驱动作动器强度设计的基础, 其中阻流门所受气动载荷及其应力分布计算是核心。以叶栅式反推力装置为对象，采用重叠网格方法实现阻流门和滑动整流罩的旋转以及平移运动网格划分，在STAR-CCM+软件环境下确定了流固耦合交界面的数据映射与交换关系，由此建立了反推力装置流固耦合数值分析模型。对反推力装置在飞机降落时正常打开和起飞滑跑紧急终止时应急打开两种动态过程进行仿真，结果表明：随阻流门旋转，阻流门所受气动载荷与等效应力快速增加，并在旋转角度为50°附近达到最大，且在应急终止起飞状态下打开反推力装置，阻流门承受的最大气动载荷是正常打开过程的3倍以上。
- 反推力装置 /
- 阻流门 /
- 流固耦合 /
- 气动载荷 /
- 应力分布
Abstract:
The load characteristics of the thrust reverser are the basis of the strength design of its kinematic mechanism and drive actuator, in which the calculation of the aerodynamic load and stress distribution on the blocker door is the core. Taking the cascade thrust reverser as the object, the overlapping grid method was used to achieve the movement of the boundary grid of the translating sleeve and blocker door components, at the same time, the data mapping and exchange relationship of the fluid-structure coupling interface was formed in the STAR-CCM+ software environment. Based on these, the fluid-structure coupling numerical analysis model of the thrust reverser was established. The two dynamic processes of the thrust reverser normal opening during landing and emergency opening during takeoff were simulated. Results showed that with the rotation of the blocker door, the aerodynamic load and equivalent stress on the blocker door increased rapidly, and reached the maximum near the rotation angle of 50°. Moreover, the maximum aerodynamic load on the blocker door was more than 3 times of the normal opening process when the thrust reverser was opened under emergency termination takeoff state.
- thrust reverser /
- blocker door /
- fluid-structure coupling /
- aerodynamic load /
- stress distribution

HTML

图 1 叶栅式反推力装置实物图

Figure 1. Physical diagram of the cascade thrust reverser

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图 2 叶栅式反推力装置工作原理示意图

Figure 2. Working principle schematic diagram of cascade thrust reverser

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图 3 叶栅式反推力装置三维几何模型

Figure 3. Three-dimensional geometric model of cascade thrust reverser

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图 4 计算域示意图

Figure 4. Schematic diagram of computing domain

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图 5 重叠网格划分结果

Figure 5. Overset meshing results

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图 6 阻流门网格划分结果

Figure 6. Meshing results of blocker door

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图 7 滑动整流罩及阻流门运动规律

Figure 7. Motion law of translating sleeve and blocker door

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图 8 打开状态下流场流线与压力云图

Figure 8. Flow field streamline and pressure cloud chart on opening state

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图 9 阻流门正面速度矢量及压力云图

Figure 9. Front velocity vector and pressure cloud chart of blocker door

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图 10 阻流门等效应力分布

Figure 10. Equivalent stress distribution of blocker door

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图 11 反推力装置正常打开状态时流场流线图

Figure 11. Flow field streamline diagram of thrust reverser on normal opening state

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图 12 反推力装置正常打开时流场压力云图

Figure 12. Flow field pressure cloud chart of thrust reverser on normal opening state

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图 13 反推力装置正常打开时阻流门正面压力分布

Figure 13. Blocker door front pressure distribution of thrust reverser on normal opening state

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图 14 反推力装置正常打开过程阻流门气动载荷变化

Figure 14. Variation of aerodynamic load on blocker door during thrust reverser normal opening process

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图 15 反推力装置正常打开时阻流门正面等效应力分布

Figure 15. Equivalent stress distribution on the front of blocker door on thrust reverser normal opening state

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图 16 反推力装置正常打开时阻流门背面等效应力分布

Figure 16. Equivalent stress distribution on the back of blocker door on thrust reverser normal opening state

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图 17 反推力装置应急打开时流场流线图

Figure 17. Flow field streamline diagram of thrust reverser on emergency opening state

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图 18 反推力装置应急打开时流场压力云图

Figure 18. Flow field pressure cloud chart of thrust reverser on emergency opening state

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图 19 反推力装置应急打开时阻流门正面压力分布

Figure 19. Blocker door front pressure distribution of thrust reverser on emergency opening state

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图 20 阻流门气动载荷随时间变化

Figure 20. Variation of aerodynamic load on blocker door with time

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图 21 反推力装置应急打开时阻流门正面等效应力分布

Figure 21. Equivalent stress distribution on the front of blocker door on thrust reverser emergency opening state

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图 22 反推力装置应急打开时阻流门背面等效应力分布

Figure 22. Equivalent stress distribution on the back of blocker door on thrust reverser emergency opening state

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