摘要
在爆轰推进技术的有关研究中,形成稳定的爆轰波对于爆轰发动机产生稳定推力至关重要.通过理论推导确定了斜爆轰角与来流马赫数间的曲线关系,并给出临界马赫数.进一步采用一步总包反应模型,开展近临界马赫数条件下有、无黏性扩散的斜爆轰大尺度数值模拟.针对临界马赫数近CJ特征的斜爆轰,有、无黏性两种情况下的模拟结果表明,近临界马赫数条件下斜爆轰存在CJ爆轰上行现象,爆轰驻定后,具有全局波动特征.
In the study of detonation propulsion technology,it is very important to form stable detonation waves for the detonation engine to produce stable thrust.The curvilinear relationship between the angle of oblique detonation and the incoming flow Mach number was determined and the critical Mach number was obtained.The one-step reaction model was used to simulate the oblique detonation with and without viscous diffusion at the near critical Mach number on a large scale.For oblique detonation with a critical Mach number close to C-J characteristics,the simulation results under both viscid and inviscid conditions show that the C-J detonation translates upward in the oblique detonation at critical Mach number.As the oblique detonation stands,its propagation behaves globally oscialltions.
作者
王成
吴京昌
韩文虎
杨同会
WANG Cheng;WU Jing-chang;HAN Wen-hu;YANG Tong-hui(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081, China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2020年第8期803-809,共7页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金项目(11972090,11732003)。
关键词
近CJ斜爆轰
黏性扩散效应
爆轰上行波动
near-CJ oblique detonation
viscous diffusion effect
upward fluctuation of detonation
