旋转爆轰的三维数值模拟

Three-dimensional simulation of continuous spin detonation

关键词:  旋转爆轰  数值仿真  激波

Key words:  Continuous spin detonation  Numerical simulation  Shock wave

摘要:

旋转爆轰利用爆轰波在燃烧室的供气端传播,而爆轰产物从另一端排出。为了揭示其宏观特性,采用带化学反应的三维Euler方程,在贴体坐标系中,利用带限制函数的波传播算法,对圆环形燃烧室内的旋转爆轰进行了数值研究,讨论了爆轰传播过程中的波系结构。数值结果表明,即使仅在燃烧室内壁面的部分区域充入可燃气,爆轰波也能够以旋转方式在该区域稳定传播。

Abstract:

The detonation wave propagates at the closed one end of the annual combustor and the detonation product is ejected at the opened one end in continuous spin detonation.In order to study the macro-character,based on the three-dimensional Euler equations coupling with chemical reactions,the phenomena of the continuous spin detonation in an annular combustor were numerically studied by using wave propagation algorithm with limiter in the body-fitted coordinate system.The wave structure in the flow field was discussed according to the calculated results.Even the combustor are partially filled with the combustible gas,the rotating detonation wave can propagate steadily in the layer of premixed gas.