民用飞机进气道的侧风畸变研究

刘凯礼; 孙一峰; 钟园; 张堃元; 张慧骝

doi:10.13224/j.cnki.jasp.2015.02.005

民用飞机进气道的侧风畸变研究

doi: 10.13224/j.cnki.jasp.2015.02.005

1. 中国商用飞机有限责任公司上海飞机设计研究院, 上海 201210;
2. 南京航空航天大学能源与动力学院, 南京 210016

基金项目:

中国商用飞机有限责任公司博士后基金(SADRI201202)

上海市自然科学基金(14ZR1449600)

详细信息

作者简介:
刘凯礼(1984-),男,江苏宿迁人,博士后,主要从事推进系统内流气体动力学研究.

中图分类号: V231.3
计量
- 文章访问数: 1895
- HTML浏览量: 2
- PDF量: 1521
- 被引次数: 0
出版历程
- 收稿日期: 2013-09-26
- 刊出日期: 2015-02-28

Research on inlet distortion under crosswind for civil aircraft

1. Shanghai Aircraft Design and Research Institute, Commercial Aircraft Corporation of China, Ltd ., Shanghai 201210, China;
2. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 结合民用飞机动力装置/机体集成研究的具体需要,采用数值模拟方法对大涵道比涡扇发动机进气道的侧风畸变特性进行研究,给出了进气道在侧风条件下工作的流场特征,分析了导致侧风畸变的流动机理.研究结果表明:进气道的侧风畸变主要受到典型的气流分离与再附以及地面吸入涡等复杂流动现象的影响;当进气道内部气流出现分离时,侧风畸变会随侧风速度的增加而突然加剧;进气道在近地面工作状态,产生的地面吸入涡现象可能会使短舱的侧风容限明显降低.此外,侧风状态的进气畸变特性随着发动机流量的变化,进气道内部气流的分离与再附存在差别,这导致了进气畸变指数呈现迟滞变化.
- 畸变 /
- 进气道 /
- 民用飞机 /
- 侧风 /
- 短舱
Abstract: The inlet aerodynamic performance of distortion under crosswind for a high bypass ratio turbofan engine was numerically simulated to meet the need of civil aircraft engine/airframe integration. The flow characteristics and their underlying flow physics were investigated. The investigation suggests that: typical flow phenomena of separations, reattachments and ground vortex are found to be the root causes for the inlet distortion under crosswind; there is a sudden intensification in the distortion index as the onset of the inlet internal flow is separated with the increasing speed of crosswind; the civil aircraft inlet tolerance of crosswind would be reduced as the nacelles are affected by the ground vortex phenomenon; the distortion characteristics of civil aircraft inlet are also affected by the engine massflow, whilst the hysteresis loop of the distortion index is captured for the flow separation and reattachments are not exactly repeatable as the engine corrected mass flow rates vary.
- distortion /
- inlet /
- civil aircraft /
- crosswind /
- nacelle

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