|
|||||
|
|
| 超声速凹槽大涡数值模拟研究 | |
| 引用本文： | 肖隐利,杨顺华,宋文艳,乐嘉陵.超声速凹槽大涡数值模拟研究[J].空气动力学学报,2009,27(4). |
| 作者姓名： | 肖隐利 杨顺华 宋文艳 乐嘉陵 |
| 作者单位： | 1. 西北工业大学动力与能源学院,陕西,西安,710072 2. 中国空气动力研究与发展中心,四川,绵阳,621000 3. 西北工业大学动力与能源学院,陕西,西安,710072;中国空气动力研究与发展中心,四川,绵阳,621000 |
| 基金项目： | 国家自然科学基金资助 |
| 摘 要： | 在超声速燃烧室内常采用凹槽增强燃料与空气的混合,实现火焰稳定,本文采用大涡模拟方法对开式凹槽流场进行了数值模拟研究,计算采用Smagorinsky 亚网格模型模拟小尺度涡的作用.数值模拟结果给出了凹槽流动的自激振荡的发展过程,以及凹槽流动中拟序结构的演变过程,如涡的卷起、增长,涡与涡之间的合并、破碎等,计算得到的凹槽波动的峰值频率和理论结果一致. |
| 关 键 词： | 凹槽 火焰稳定器 大涡模拟 |
The large eddy simulation of supersonic cavity flow field |
|
| XIAO Yin-li,YANG Shun-hua,SONG Wen-yan,LE Jia-ling.The large eddy simulation of supersonic cavity flow field[J].Acta Aerodynamica Sinica,2009,27(4). | |
| Authors: | XIAO Yin-li YANG Shun-hua SONG Wen-yan LE Jia-ling |
| Institution: | 1.School of Engine and Energy;Northwestern Polytechnical Univ.;Xi'an Shanxi 710072;China;2.China Aerodynamics Research and Development Center;Mianyang Sichuan 621000;China |
| Abstract: | In this paper,the large eddy simulation method is applied to simulate supersonic flows over open cavities,in the setting of a dual-mode scramjet engine to enhance fuel/air mixing and flame holding.The governing equations of large scale eddies are solved with 2order scheme and the effect of small scale eddies is simulated with Smagorinsky sub-grid scale model.Detailed coherent structures of cavity flows with self-sustained oscillation characteristics are successfully captured including rolling up,growing up,... |
| Keywords: | cavity flame holder large eddy simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |