引用本文:
【打印本页】   【HTML】 【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 27次   下载 16 本文二维码信息
码上扫一扫!
分享到: 微信 更多
鼓包诱导斜爆震波的数值研究
韩信1,2,张文硕1,2,张子健1,3,刘云峰1,2,姜宗林1,2
1.中国科学院力学研究所 高温气体动力学国家重点实验室,北京 100190;2.中国科学院大学 工程科学学院,北京 100049;3.香港理工大学 航空工程跨领域学部,香港 九龙 999077
摘要:
为实现低马赫数条件下斜爆震波的快速起爆,以及提高斜爆震波对来流扰动的抗干扰能力,提出了通过在诱导区内设置一个小鼓包来控制斜爆震波起爆的方案,并通过数值求解二维多组分欧拉方程研究了楔面和鼓包诱导的斜爆震波。结果表明:通过在诱导区内设置鼓包可实现斜爆震波的提前起爆;且在较宽马赫数范围内,其起爆位置相对固定。鼓包诱导的斜爆震波主要有强耦合和弱耦合两种起爆形式,起爆形式与鼓包和斜激波的相对位置有关。此外,来流扰动会使楔面诱导的斜爆震波剧烈振荡,不利于斜爆震发动机的稳定工作;鼓包的存在对来流扰动所引发的斜爆震波振荡具有一定的抑制作用。
关键词:  斜爆震发动机  鼓包  加速起爆  来流扰动  流动控制
DOI:10.13675/j.cnki.tjjs.200853
分类号:O381
基金项目:国家自然科学基金(11672312)。
Numerical Study of Oblique Detonation Waves Induced by a Bump
HAN Xin1,2, ZHANG Wen-shuo1,2, ZHANG Zi-jian1,3, LIU Yun-feng1,2, JIANG Zong-lin1,2
1.State Key Laboratory of High-Temperature Gas Dynamics (LHD),Institute of Mechanics, Chinese Academy of Sciences,Beijing 100190,China;2.School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China;3.Interdisciplinary Division of Aeronautical and Aviation Engineering,The Hong Kong Polytechnic University, Kowloon 999077,China
Abstract:
In order to implement fast initiation of oblique detonation wave at low Mach numbers and to improve its capability of resisting disturbance to unsteady inflow, an idea of controlling initiation of oblique detonation wave by setting a small bump within its induction zone was proposed. Numerical simulations of oblique detonation waves induced by wedges and bumps were carried out by solving the two-dimensional multi-species Euler equations. Results show that initiation acceleration of oblique detonation wave can be implemented by setting a bump within the induction zone, and the initiation location keeps relatively fixed for a relative wide range of Mach number. There exist two initiation patterns for bump-induced oblique detonation wave, namely the strong coupled initiation and weak coupled initiation, depending on the location relationship between the bump and the oblique shock wave. Further, severe oscillation of wedge-induced oblique detonation wave would be induced by inflow disturbance, which is disadvantageous to the stable operation of oblique detonation engine. A certain inhibitory effect on the oscillation of oblique detonation wave induced by inflow disturbance can be observed with the inclusion of a bump.
Key words:  Oblique detonation wave engine  Bump  Initiation acceleration  Inflow disturbance  Flow control