Influence of Pairing Asymmetry on Thermoacoustic Instabilities in a Can-annular Combustor

被引:0
|
作者
Bae, Dahyun [1 ]
Moon, Kihun [1 ]
Kim, Kyu Tae [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Dept Aerosp Engn, Daejeon, South Korea
关键词
Azimuthal instabilities; Can-annular combustor; Combustion instability; Cross-talk; Hydrogen; FLAME TRANSFER-FUNCTIONS; ACOUSTIC INTERACTIONS; SWIRL; MECHANISMS; MODES;
D O I
10.15231/jksc.2023.28.1.040
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The influence of pairing asymmetry on thermoacoustic instabilities was experimentally investigated in an odd -numbered can -annular combustion system, using 3D FEM-based Helmholtz simulation and acoustic wave decomposition method. We show that a pair of degenerate mode is split into two modes with a frequency difference of 6 Hz, which is induced by a pairing -asymmetry -related geometrical property. Interestingly, the modal interaction between splitting modes gives rise to the periodic transition between standing and spinning azimuthal instabilities in the annular cross -talk section.
引用
收藏
页码:40 / 48
页数:9
相关论文
共 50 条
  • [1] Influence of rotational asymmetry on thermoacoustic instabilities in a can-annular lean-premixed combustor
    Moon, Kihun
    Yoon, Changjin
    Kim, Kyu Tae
    COMBUSTION AND FLAME, 2021, 223 : 295 - 306
  • [2] Thermoacoustic oscillations in a can-annular model combustor with asymmetries in the can-to-can coupling
    Buschmann, Philip E.
    Worth, Nicholas A.
    Moeck, Jonas P.
    PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2023, 39 (04) : 5707 - 5715
  • [3] Reduced-order modelling of thermoacoustic instabilities in can-annular combustors
    Orchini, Alessandro
    Pedergnana, Tiemo
    Buschmann, Philip E.
    Moeck, Jonas P.
    Noiray, Nicolas
    JOURNAL OF SOUND AND VIBRATION, 2022, 526
  • [4] Weakly nonlinear analysis of thermoacoustic oscillations in can-annular combustors
    Orchini, Alessandro
    Moeck, Jonas P.
    JOURNAL OF FLUID MECHANICS, 2024, 980
  • [5] Numerical Simulation of Sound Propagation through the Can-Annular Combustor Exit
    Farisco, Federica
    Panek, Lukasz
    Kok, Jim B. W.
    ACTA ACUSTICA UNITED WITH ACUSTICA, 2018, 104 (04) : 685 - 696
  • [6] Cross-talk-interaction-induced combustion instabilities in a can-annular lean-premixed combustor configuration
    Moon, Kihun
    Jegal, Hyunwook
    Yoon, Changjin
    Kim, Kyu Tae
    COMBUSTION AND FLAME, 2020, 220 : 178 - 188
  • [7] Interplay of Clusters of Acoustic and Intrinsic Thermoacoustic Modes in Can-Annular Combustors
    Fournier, Guillaume J. J.
    Schaefer, Felicitas
    Haeringer, Matthias
    Silva, Camilo F.
    Polifke, Wolfgang
    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2022, 144 (12):
  • [8] INTERPLAY OF CLUSTERS OF ACOUSTIC AND INTRINSIC THERMOACOUSTIC MODES IN CAN-ANNULAR COMBUSTORS
    Fournier, Guillaume J. J.
    Schaefer, Felicitas
    Haeringer, Matthias
    Silva, Camilo F.
    Polifke, Wolfgang
    PROCEEDINGS OF ASME TURBO EXPO 2022: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, GT2022, VOLUME 3A, 2022,
  • [9] Experimental Study of Wall Temperature Effect on Thermoacoustic Instabilities in Annular Combustor
    Fang Y.-Q.
    Tao W.-J.
    Yang Y.
    Wang G.-F.
    Zheng Y.
    Tuijin Jishu/Journal of Propulsion Technology, 2022, 43 (08):
  • [10] Nonlinear interaction between clustered unstable thermoacoustic modes in can-annular combustors
    von Saldern, Jakob G. R.
    Moeck, Jonas P.
    Orchini, Alessandro
    PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2021, 38 (04) : 6145 - 6153