反推气流对发动机进口流场影响的数值研究

王志强; 沈锡钢; 胡骏; 高翔; 刘立平

doi:10.13224/j.cnki.jasp.2016.04.019

反推气流对发动机进口流场影响的数值研究

doi: 10.13224/j.cnki.jasp.2016.04.019

1. 南京航空航天大学能源与动力学院, 江苏省航空动力系统重点实验室, 南京 210016;
2. 中国航空工业集团公司沈阳发动机设计研究所, 沈阳 110015

基金项目:

中国博士后科学基金(2014M551590)

详细信息

作者简介:
王志强(1981-),男,江苏太仓人,讲师,博士后,主要从事叶轮机气动热力学研究.

中图分类号: V231.3
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- 被引次数: 0
出版历程
- 收稿日期: 2014-08-03
- 刊出日期: 2016-04-28

Numerical investigation on influence of reverser flow to engine inlet flow field

1. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China

摘要

摘要: 通过求解三维雷诺平均的Navier-Stokes(N-S)方程,获得了某大型运输机降落滑跑过程中,在不同滑跑速度下的反推气流扰流流场细节.单台发动机反推气流扰流流场的计算结果表明,在任何状态下,反推气流都不会被发动机重新吸入.飞机/发动机一体化计算结果表明:随着相对来流马赫数的减小,反推气流被发动机重新吸入的可能性不断增大.当相对来流马赫数减小到0.1时,反推气流会被外侧发动机重新吸入,此时,发动机进口截面出现了明显的流场畸变,周向稳态总压畸变指数增加明显.当相对来流马赫数减小到0.05时,两台发动机都会吸入反推气流.当相对来流马赫数减小到0时,反推气流没有被重新吸入发动机,但是反推气流会干扰吸入发动机的自由流,降低自由流的总压,从而也会造成发动机进口的流场畸变.
- 大型运输机 /
- 大涵道比涡扇发动机 /
- 反推力装置 /
- 流场畸变 /
- 流场计算
Abstract: By solving the three-dimensional Reynolds averaged Navier-Stokes (N-S) equations, the detailed flow field information of the reverser flow was obtained under different taxiing-velocity conditions during the landing process of a large transport aircraft. The single engine calculation shows that in no case the reverser flow will be re-ingested by the engine. The aircraft/engine integrated calculation indicates that with the decrease of relative wind Mach number, the possibility of the reverser flow being re-ingested by engine keeps increasing. When the relative wind Mach number decreases to 0.1, the reverser flow is re-ingested by the outboard engine. Meanwhile, the inlet flow field of the engine is distored, and the circumferential steady total pressure distortion coefficient increases obviously. When the relative wind Mach number decreases to 0.05, the reverser flow is re-ingested by both the outboard and inboard engines. When the relative wind Mach number decreases to 0, the reverser flow is not re-ingested. But the reverser flow hinders the free flow and reduces the total pressure of the free flow ingested by the engines, finally causing the inlet flow field distortion of the engine.
- large transport aircraft /
- high bypass ratio turbofan engine /
- thrust reverser /
- flow field distortion /
- flow field calculation

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参考文献(19)

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