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模型燃烧室内不稳定燃烧发展过程的数值分析

冯伟 聂万胜 李斌 郑刚

冯伟, 聂万胜, 李斌, 等 . 模型燃烧室内不稳定燃烧发展过程的数值分析[J]. 北京航空航天大学学报, 2016, 42(6): 1195-1202. doi: 10.13700/j.bh.1001-5965.2015.0457
引用本文: 冯伟, 聂万胜, 李斌, 等 . 模型燃烧室内不稳定燃烧发展过程的数值分析[J]. 北京航空航天大学学报, 2016, 42(6): 1195-1202. doi: 10.13700/j.bh.1001-5965.2015.0457
FENG Wei, NIE Wansheng, LI Bin, et al. Numerical analysis of unstable combustion developing process in model combustor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1195-1202. doi: 10.13700/j.bh.1001-5965.2015.0457(in Chinese)
Citation: FENG Wei, NIE Wansheng, LI Bin, et al. Numerical analysis of unstable combustion developing process in model combustor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1195-1202. doi: 10.13700/j.bh.1001-5965.2015.0457(in Chinese)

模型燃烧室内不稳定燃烧发展过程的数值分析

doi: 10.13700/j.bh.1001-5965.2015.0457
基金项目: 国家自然科学基金(91441123);国家"973"计划(613193)
详细信息
    作者简介:

    冯伟 男,博士研究生。主要研究方向:液体火箭发动机燃烧不稳定性。Tel.:010-66364480 E-mail:fengwei_85@163.com;聂万胜 男,博士,教授,博士生导师。主要研究方向:航空宇航推进与先进流动控制。Tel.:010-66364204 E-mail:nws1969@126.com

    通讯作者:

    聂万胜,Tel.:010-66364204 E-mail:nws1969@126.com

  • 中图分类号: V434+.1

Numerical analysis of unstable combustion developing process in model combustor

  • 摘要: 为了对自燃推进剂燃烧室内出现的不稳定燃烧现象进行详细分析,采用欧拉-拉格朗日方法对该燃烧室内的气液两相非稳态燃烧过程进行了数值模拟,计算得到的压力振荡幅值和频谱特性与实验结果吻合较好,在此基础上对不同燃烧阶段内的压力和释热变化规律进行了分析。结果表明:在压力振荡幅值超过10%的不稳定燃烧阶段,压力振荡主频为9 200 Hz,燃烧室内横向压力分布与1阶切向振型一致,仿真中再现了1阶切向自激高频不稳定燃烧的产生及发展过程;稳定燃烧向不稳定燃烧转变早期,压力振荡从部分燃烧释热波动中获得能量,压力振荡幅值缓慢增长;随着燃烧进行,燃烧释热波动与压力振荡之间相位和频谱特性逐渐趋于一致,压力振荡幅值开始急剧增大;当二者完全耦合时,燃烧室内压力振荡幅值达到极限饱和状态,此时压力振荡幅值超过了平均室压的200%。

     

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出版历程
  • 收稿日期:  2015-07-08
  • 网络出版日期:  2016-06-20

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