航天推进技术研究院主办
Huang Rixinl,Tan Yonghua.Numerical mvestlgatmn on working process in a liquid ramj et chamber[J].Journal of Rocket Propulsion,2009,35(02):18-24.
亚燃燃烧室稳态工作过程数值研究
- Title:
- Numerical mvestlgatmn on working process in a liquid ramj et chamber
- Keywords:
- ramjet; combustion chamber; working process; numerical simulation
- 分类号:
- TKl6
- 文献标志码:
- A
- 摘要:
- 采用nucnt流场计算软件。对液体亚燃冲压发动机燃烧室的稳态工作过程,包 括点火前的冷流场与点火后的两相反应流场进行数值模拟研究。首先.通过二维计算,对比 研究两种不同阻塞比燃烧室方案的冷流损失特性与回流区特性,进行方案初选。随后,对选 型后方案进行两相反应流场计算,研究燃烧室热态工作过程的温度场、燃油分布与燃烧效率 的一般规律,比较并选择适合的燃油供应方案;最后,对燃烧室进行三维详细结构的建模并 计算。计算结果很好地揭示了燃烧室内的流动和燃烧过程,与试验数据吻合较好。
- Abstract:
- Based on Fluent software,numerical investigation is performed on working process, including non-reacting flow before ignition and two phases reacting flow after ignition,in a liquid ramjet combustion chamber.The inner flow characteristics of two different block-area—ratio schemes ale analyzed in total pressure loss and recirculation region distribution.After comparison,the smaller block—area-ratio scheme with good performance is chosen.Then simulation of two phases reacting flow is performed,and temperature field,fuel distribution and combustion efficiency are obtained, which helps to decide a reasonable fuel feeding scheme.At last,the results of three dimensional simulation provide a more particular understanding of flow and combustion process,and simulation results fit the experiment data well.
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Huang Rixinl,Tan Yonghua.Numerical prediction of fuel distribution
in a ramjet chamber[J].Journal of Rocket Propulsion,2008,34(02):17.
备注/Memo
收稿日期:2008-06—26;修回13期:2008—10-10。 作者简介:黄日鑫(1982一),男,硕士,研究领域为航空宇航推进理论与工程。