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引言冲压发动机燃烧室中燃烧不稳定性是由于声波、大旋涡和化学能释放等一系列的复杂、非线性相互作用引起的。本文的数值模拟结果,是在一个理想的、中心突扩冲压发动机燃烧室中分离并研究声波和大旋涡结构间的相互作用而得到的。这是为了确定在一定几何尺寸的燃烧室中声波对旋涡的分离和合并的影响程度。由于燃烧室长度和燃烧时间不同,所以很难对燃烧室中发生的各种物理和化学过程之间
INTRODUCTION The combustion instability in the ramjet engine is due to a series of complex and nonlinear interactions such as acoustic wave, large vortex and chemical energy release. The numerical simulation results obtained in this paper are obtained from an ideal, center-tapped ramjet engine combustion chamber and the interaction between sound waves and large vortices is studied. This is to determine the extent to which acoustic waves influence the separation and consolidation of vortices in a given geometry of the combustion chamber. Due to the different combustion chamber length and combustion time, it is very difficult for the combustion chamber to occur between various physical and chemical processes