计算物理 ›› 2009, Vol. 26 ›› Issue (4): 534-540.

• 研究论文 • 上一篇    下一篇

煤油超燃冲压发动机三维大规模并行数值模拟

杨顺华1,2, 乐嘉陵1, 赵慧勇1, 郑忠华1   

  1. 1. 中国空气动力研究与发展中心计算空气动力学研究所, 四川 绵阳 621000;
    2. 中国科学技术大学力学与机械工程系, 安徽 合肥 230026
  • 收稿日期:2008-01-18 修回日期:2008-09-06 出版日期:2009-07-25 发布日期:2009-07-25
  • 作者简介:杨顺华(1976-),男,湖南新晃,博士,从事超燃冲压发动机研究.
  • 基金资助:
    国家"863-702"资助项目

Three-dimensional Massively Parallel Numerical Simulation of Kerosene-fueled Scramjet

YANG Shunhua1,2, LE Jialing1, ZHAO Huiyong1, ZHENG Zhonghua1   

  1. 1. CAI, China Aerodynamics Research & Development Center, Mianyang 621000, China;
    2. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China
  • Received:2008-01-18 Revised:2008-09-06 Online:2009-07-25 Published:2009-07-25

摘要: 在我国巨型计算机上,采用1024个CPU对煤油燃料超燃冲压发动机燃烧流场进行三维大规模并行数值模拟.计算软件采用自主研发的并行软件AHL3D,控制方程采用雷诺平均的N-S方程,无粘项计算采用Steger-Warning矢通量分裂格式,湍流模型采用k-ω双方程模型,煤油分子式采用正癸烷代替.计算给出的发动机壁面压强分布与试验测量结果有较好的一致性.结果表明,凹槽是发动机主要的着火区和火焰稳定区,同时,由于燃料的喷注形成的回流区也起到一定的稳焰作用.计算结果验证了AHL3D程序和采用的理论模型可以用于模拟煤油燃料超燃冲压发动机内部的复杂流动.

关键词: 超燃冲压发动机, 数值模拟, 负载平衡, 大规模并行, 煤油, 化学动力学

Abstract: Massively parallel numerical simulation of a kerosene-fueled scramjet on national MPP computer with 1024 CPUs is presented.A self-developed software AHL3D is employed.Reynolds averaged N-S equations are adopted in governing equations.Inviscid flux is computed with Steger-Warming flux-splitting scheme.Turbulent effects are studied in a k-ω two-equation turbulence model.Kerosene is replaced by a simple surrogated fuel of n-decane.Computed wall pressure along combustor exhibits good agreement with measured data.Computation shows that cavity provides main ignition zone and flame holder,and recirculation zone resulting from fuel injection contributes to flame stability.It indicates that the AHL3D code and methodologies can be used to simulate complicated flow patterns in kerosene-fueled scramjets.

Key words: scramjet, numerical simulation, load balance, parallel computation, kerosene, chemical kinetics

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