留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

声激励下旋流钝体火焰的非线性响应实验

吴昀辉 傅宸 高怡 王晓阳 夏溪

吴昀辉,傅宸,高怡,等.声激励下旋流钝体火焰的非线性响应实验[J].航空动力学报,2022,37(9):1872‑1885. doi: 10.13224/j.cnki.jasp.20210403
引用本文: 吴昀辉,傅宸,高怡,等.声激励下旋流钝体火焰的非线性响应实验[J].航空动力学报,2022,37(9):1872‑1885. doi: 10.13224/j.cnki.jasp.20210403
WU Yunhui,FU Chen,GAO Yi,et al.Experiment on nonlinear response of swirling bluff⁃body flame with external acoustic forcing[J].Journal of Aerospace Power,2022,37(9):1872‑1885. doi: 10.13224/j.cnki.jasp.20210403
Citation: WU Yunhui,FU Chen,GAO Yi,et al.Experiment on nonlinear response of swirling bluff⁃body flame with external acoustic forcing[J].Journal of Aerospace Power,2022,37(9):1872‑1885. doi: 10.13224/j.cnki.jasp.20210403

声激励下旋流钝体火焰的非线性响应实验

doi: 10.13224/j.cnki.jasp.20210403
基金项目: 

国家自然科学基金 U2141221

国家重大科技专项(2017⁃Ⅲ⁃0007⁃0033,2017⁃Ⅲ⁃0008⁃0034) 

详细信息
    作者简介:

    吴昀辉(1997-),女,硕士生,主要从事外加声激励下火焰非线性响应研究。

    通讯作者:

    高怡(1982-),女,副教授,博士,主要从事湍流喷雾燃烧激光诊断技术及应用研究。E⁃mail:gaoyisjtu@sjtu.edu.cn

  • 中图分类号: V231.2

Experiment on nonlinear response of swirling bluff⁃body flame with external acoustic forcing

  • 摘要:

    在常压条件下对二甲醚贫燃预混旋流钝体火焰施加100 Hz的外加声激励,运用高速OH*化学发光成像和粒子图像测速锁相同步测量的实验方法,针对不同速度脉动比例下的火焰形态特征和流场特征的动态变化开展可视化测量,得到火焰描述函数。研究发现,随着声波幅值增大,火焰的热释放率将先线性增加,在到达扰动临界点后,火焰出现非线性响应现象,实验中的临界速度脉动比例为16%。同时,通过逆阿贝尔变换和本征正交分解等方法比较了火焰线性响应与非线性响应工况的流场和燃烧场差异,发现在非线性响应工况下火焰形态的涡卷起和流场中的外回流区涡脱落特征增强,这表明外回流区涡脱落增强现象可能是诱发火焰非线性响应的原因。

     

  • 图 1  燃烧器示意简图(单位:mm)

    Figure 1.  Schematic of the burner (unit: mm)

    图 2  声激励系统示意图

    Figure 2.  Schematic of the acoustic forcing system

    图 3  光学诊断系统示意图

    Figure 3.  Schematic of the optical diagnostic system

    图 6  基于100个声激励周期的相平均逆阿贝尔变换图像对比工况A3和A7的OH*化学发光强度随相位的变化曲线

    Figure 6.  Phase⁃averaged OH* CL intensity obtained by inversed Abel transformation over 100 acoustic periods in case A3 and case A7

    图 7  基于火焰OH*化学发光相平均逆阿贝尔变换图像对比工况A3和A7火焰质心坐标轨迹变化

    Figure 7.  Trajectory of axial and radial centroid locations in phased⁃averaged OH*CL images obtained by inverse Abel transformed in case A3 and case A7

    图 11  两种冷态工况时均流线与轴向速度云图

    Figure 11.  Time⁃averaged streamline and axial velocity contour in cold airflow for the two cases

    表  1  实验工况表

    Table  1.   Experimental conditions

    工况电压幅值/mV速度脉动比例/%
    A000
    A1504
    A21008
    A315012
    A420016
    A530020
    A640023
    A750026
    A870034
    下载: 导出CSV
  • [1] LIEUWEN T,TORRES H,JOHNSON C,et al.A mechanism of combustion instability in lean premixed gas turbine combustors[J].Journal of Engineering for Gas Turbines and Power,2001,123(1):182⁃189.
    [2] LIEUWEN T,MCDONELL V,PETERSEN E,et al.Fuel flexibility influences on premixed combustor blowout,flashback,autoignition,and stability[J].Journal of Engineering for Gas Turbines and Power,2008,130(1):601⁃615.
    [3] SCHIMEK S,MOECK J P,PASCHEREIT C O.An experimental investigation of the nonlinear response of an atmospheric swirl⁃stabilized premixed flame[J].Journal of Engineering for Gas Turbines and Power,2011,133(10):665‑675.
    [4] ROY R,GUPTA A K.Experimental investigation of flame fluctuation reduction in distributed combustion[J].Experiments in Fluids,2021,62(4):1⁃17.
    [5] 吕丽君,林宇震,韩啸,等.外激作用下自激热声系统的非线性动力学响应[J].航空动力学报,2018,33(10):2404⁃2413.

    Lijun LÜ,LIN Yuzhen,HAN Xiao,et al.Nonlinear dynamic responses of a self⁃excited thermoacoustic system subjected to acoustic forcing[J].Journal of Aerospace Power,2018,33(10):2404⁃2413.(in Chinese)
    [6] 杨甫江,郭志辉,曾宇晖.贫燃预混旋流火焰热声特性研究[J].航空动力学报,2014,29(12):2854⁃2861.

    YANG Fujiang,GUO Zhihui,ZENG Yuhui.Study on thermoacoustic characteristics of lean premixed swirling flames[J].Journal of Aerospace Power,2014,29(12):2854⁃2861.(in Chinese)
    [7] TEMME J E,ALLISON P M,DRISCOLL J F.Combustion instability of a lean premixed prevaporized gas turbine combustor studied using phase⁃averaged PIV[J].Combustion and Flame,2014,161(4):958⁃970.
    [8] THUMULURU S K,LIEUWEN T.Characterization of acoustically forced swirl flame dynamics[J].Proceedings of the Combustion Institute,2009,32(2):2893⁃2900.
    [9] RUAN C,CHEN F,YU T,et al.Experimental study on impacts of fuel type on thermo⁃acoustic instability in a gas turbine model combustor[J].Science China Technological Sciences,2021,64:1345‑1358.
    [10] CANDEL S.Combustion dynamics and control⁃progress and challenges[J].Proceeding of the Combustion Institute,2002,29(1):1⁃28.
    [11] 孟晟.燃烧器几何结构对于非预混旋流燃烧热声不稳定的影响及其控制研究[D].杭州:浙江大学,2019.

    MENG Sheng.Study of combustor geometry effects on thermoacoustic instability of non⁃premixed swirling flame and its passive control[D].Hangzhou:Zhejiang University,2019.(in Chinese)
    [12] HUANG Y,YANG V.Dynamics and stability of lean⁃premixed swirl⁃stabilized combustion[J].Progress in Energy and Combustion Science,2009,35(4):293⁃364.
    [13] WANG G,LIU X,XIA X,et al.Dynamics of periodically⁃excited vortices in swirling flames[J].Proceedings of the Combustion Institute,2021,38(4):6183⁃6191.
    [14] KIM K T,SANTAVICCA D.Linear stability analysis of acoustically driven pressure oscillations in a lean premixed gas turbine combustor[J].Journal of Mechanical Science and Technology,2010,23(12):3436⁃3447.
    [15] NOIRAY N,DUROX D,SCHULLER T,et al.A unified framework for nonlinear combustion instability analysis based on the flame describing function[J].Journal of Fluid Mechanics,2008,615:139⁃167.
    [16] DOWLING A P.Nonlinear self⁃excited oscillations of a ducted flame[J].Journal of Fluid Mechanics,1997,346:271‑290.
    [17] 胡悦,谭建国,吕良.甲烷⁃空气预混火焰中OH*标识放热率的数值模拟研究[J].推进技术,2018,39(4):835⁃842.

    HU Yue,TAN Jianguo,Liang LÜ.Numerical valuation of heat release rate measurement using OH* chemiluminescence in premixed methane⁃air flames[J].Journal of Propulsion Technology,2018,39(4):835⁃842.(in Chinese)
    [18] PALIES P,DUROX D,SCHULLER T,et al.The combined dynamics of swirler and turbulent premixed swirling flames[J].Combustion and Flame,2010,157(9):1698⁃1717.
    [19] 王俊懿,葛宏达,赵晓敏,et al.当量比对旋流燃烧室火焰形态与流场影响的激光诊断[J].实验流体力学,2019,33(4):21⁃26.

    WANG Junyi,GE Hongda,ZHAO Xiaomin,et al.measurement and diagnosis of the influence of equivalent ratio on the flame shape and flow field of a swirling combustor[J].Journal of Experiments in Fluid Mechanics,2019,33(4):21⁃26.(in Chinese)
    [20] BELLOWS B D,BOBBA M K,FORTE A,et al.Flame transfer function saturation mechanisms in a swirl⁃stabilized combustor[J].Proceedings of the Combustion Institute,2007,31(2):3181⁃3188.
    [21] 马静,郭志辉.贫燃预混旋流火焰的模态转换燃烧不稳定特性分析[J].推进技术,2020,41(5):1072⁃1081.

    MA Jing,GUO Zhihui.Analysis of combustion instability characteristics of mode⁃switching on lean⁃premixed swirling flame[J].Journal of Propulsion Technology,2020,41(5):1072⁃1081.(in Chinese)
    [22] 张弛,王波,邹鹏飞,等.同心旋流分层火焰的外激脉动特性统计学分析[J].航空动力学报,2017,32(8):1801⁃1808.

    ZHANG Chi,WANG Bo,ZOU Pengfei,et al.Statistical analysis on the forced dynamic of internally⁃staged⁃swirling stratified flame[J].Journal of Aerospace Power,2017,32(8):1801⁃1808.(in Chinese)
  • 加载中
图(27) / 表(1)
计量
  • 文章访问数:  207
  • HTML浏览量:  51
  • PDF量:  44
  • 被引次数: 0
出版历程
  • 收稿日期:  2021-07-29

目录

    /

    返回文章
    返回