Numerical investigation of the supersonic combustion of kerosene in a strut-based combustor
Numerical investigation of the supersonic combustion of kerosene in a strut-based combustor
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DOI：
10.2514/1.46965
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发表时间：
2010-09
影响因子：
1.9
通讯作者：
K. Kumaran;P. Behera;V. Babu
中科院分区：
文献类型：
--
作者：
K. Kumaran;P. Behera;V. Babu
本文对液体煤油在支撑燃烧室中的超音速燃烧进行了数值研究。为此，采用一步化学反应模型进行了三维可压缩流动、湍流流动、非反应流动和反应流动的计算。对于非反应流动的计算，使用了燃料液滴轨迹、混合度、andmixingefficiencyarepresentedanddiscussed.Forthereacting流动计算、放热等值线和马赫数以及燃烧效率、总压损失和推力分布沿燃烧室长度的变化来识别燃烧室内的混合和放热区域。此外，还将预测的燃烧室顶壁静压变化与实验数据进行了比较。详细讨论了燃料的横向扩散和混合过程的程度，特别是对于煤油这样的液体燃料，对放热预测的意义。
In this numerical study, supersonic combustion of liquid kerosene in a strut-based combustor is investigated. To this end, three-dimensional compressible, turbulent, nonreacting and reacting flow calculations with a single-step chemistry model have been carried out. For the nonreacting flow calculations, fuel droplet trajectories, degree of mixing,andmixingefficiencyarepresentedanddiscussed.Forthereacting flowcalculations,contoursofheatrelease and Mach number and the variation of combustion efficiency, total pressure loss, and thrust profile along the combustor length are used to identify the regions of mixing and heat release inside the combustor. Furthermore, the predicted variation of static pressure along the combustor top wall is compared with experimental data. The significance of the lateral spread of the fuel and the extent of the mixing process, especially for a liquid fuel such as kerosene, on the prediction of heat release is discussed in detail.