时空守恒CE/SE数值方法在凹槽燃烧流动中的应用研究

推进技术 ›› 2010, Vol. 31 ›› Issue (1): 34-41.

时空守恒CE/SE数值方法在凹槽燃烧流动中的应用研究

凌文辉,赵书苗,刘建文,刘凤君

南京航空航天大学能源与动力学院;北京动力机械研究所;北京动力机械研究所;北京动力机械研究所;北京动力机械研究所

发布日期:2021-08-15

Numerical investigations of the cavity combustion flow using the CE/SE method

Coll.of Energy and Power,Nanjing Univ.of Aeronautics and Astronautics,Nanjing 210016,China;Beijing Power Machinery Research Inst.,Beijing 100074,China;Beijing Power Machinery Research Inst.,Beijing 100074,China;Beijing Power Machinery Research Inst.,Beijing 100074,China;Beijing Power Machinery Research Inst.,Beijing 100074,China

Published:2021-08-15

摘要/Abstract

摘要： 应用时空守恒元和解元CE/SE方法,发展了求解化学反应流场的三维并行计算程序。为验证程序,对超声速冲压喷射燃烧室模型进行了计算,计算结果与实测数据以及相关文献的计算结果吻合较好,验证了本文的处理方法和程序的正确性。采用H2和O2的8组分34基元化学反应模型,对不同长深比的凹槽燃烧流动进行了数值模拟,分析了凹槽增强混合对稳定火焰的作用。计算结果表明,CE/SE方法具有模拟凹槽超声速燃烧流动的能力,数值模拟的结果有助于认识凹槽的火焰稳定机理。

关键词: 时空守恒元和解元方法;基元化学反应;并行计算;凹槽;数值仿真

Abstract: A three-dimensional parallel program based on unstructured grid for reacting flows was developed using the CE/SE method.Firstly,a scramjet combustor model was chosen to validate the present program.The computed results agree well with the experimental data.And then,the cavity combustion flows with three length-to-depth ratios were simulated under stoichiometric conditions by using 8-species,34-elementary reaction model.The flame-holding and mixing enhancement characteristics of the cavities were evaluated.It demonstrates that CE/SE method is able to simulate the supersonic combustion of cavities,and the numerical studies can help understand the flame holding mechanism of the cavity.

Key words: CE/SE;Elementary reaction;Parallel computation;Numerical simulation;Cavity

凌文辉,赵书苗,刘建文,刘凤君. 时空守恒CE/SE数值方法在凹槽燃烧流动中的应用研究[J]. 推进技术, 2010, 31(1): 34-41.