페어링 비대칭성이 캔-환형 연소기의 열음향 불안정에 미치는 영향
Influence of Pairing Asymmetry on Thermoacoustic Instabilities in a Can-annular Combustor
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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 annular cross-talk section.
Abstract
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 annular cross-talk section.
참고문헌 (32)
- T. Lieuwen, "Combustion instabilities in gas turbine engines: operational experience, fundamental mechanisms, and modeling" (2005), AIAA
- Y. Huang, "Effect of swirl combustion dynamics in a lean-premixed swirl-stabilized combustor", Proc. Combust. Inst, 30, pp.1775~1782 (2005)
- K. T. Kim, "Interference mechanisms of acoustic", convective disturbances in a swirl-stabilized lean-premixed combustor, 2013, pp.160, 1441~1457
- K.T. Kim, "Combustion instability feedback mechanisms in a lean-premixed swirl-stabilized combustor", Combust. Flame, 171, pp.137~151 (2016)
- W. D. York, "Development and testing of a low NOx hydrogen combustion system for heavy-duty gas turbines", J. Eng. Gas Turbines Power, 135, pp.022001~ (2013)
- J. Choi, "Hydrogen enhancement on a mesoscale swirl stabilized burner array", Int. J. Hydrogen Energy, 46, pp.23906~23915 (2021)
- D. Durox, "Experimental analysis of nonlinear flame transfer functions for different flame geometries", Proc. Combust. Inst, 32, pp.1391~1398 (2009)
- E. Æsøy, "and asymmetry on the acoustic response of a model can combustor", Combust. Flame, 242, pp.112176~ (2022)
- 이태송, "희박 예혼합 메조스케일 다중노즐 수소 화염의 곡률 분포", 한국연소학회지, 26(1), pp.14~21 (2021), 한국연소학회[DOI]
- U. Jin, "Influence of radial fuel staging on combustion instabilities and exhaust emissions from lean-premixed multi-element hydrogen", methane, Combust. Flame, pp.2022, 242[DOI]
- H. Kang, "Combustion dynamics of multielement lean-premixed hydrogen-air flame ensemble", Combust. Flame, 233, pp.111585~ (2021)
- P. Kaufmann, "3D Thermoacoustic properties of single can and multi can combustor configurations", ASME Conference Proceedings
- J. G. R. von Saldern, "Nonlinear interaction between clustered unstable thermoacoustic modes in can-annular combustors", Proc. Combust. Inst, 38, pp.6145~6153 (2021)
- M. Yoon, "Thermoacoustics and combustion instability analysis for multi-burner combustors", J. Sound Vib, 492, pp.115774~ (2021)
- K. Moon, "Combustion-acoustic interactions through cross-talk area between adjacent model gas turbine combustors", Combust. Flame, 202, pp.405~416 (2019)
- K. Moon, "Cross-talkinteraction-induced combustion instabilities in a can-annular lean-premixed combustor configuration", Combust. Flame, 220, pp.178~188 (2020)
- K. Venkatesan, "Heavy duty gas turbine combustion dynamics study using a two-can combustion system", ASME Conference Proceedings
- G. Ghirardo, "Thermoacoustics of can-annular combustors", J. Eng. Gas Turbines Power, 141, pp.011007~ (2019)
- H. Jegal, "Mutual synchronization of two lean-premixed gas turbine combustors : phase locking and amplitude death", Combust. Flame, 206, pp.424~437 (2019)
- H. Jegal, "Influence of asymmetric flame transfer functions on can-to-can acoustic interactions between two lean-premixed combustors", Proc. Combust. Inst, 38, pp.6051~6058 (2021)
- K. Moon, "Influence of rotational asymmetry on thermoacoustic instabilities in a canannular lean-premixed combustor", Combust. Flame, 223, pp.295~306 (2021)
- P.E. Buschmann, "Thermoacoustic oscillations in a can-annular model combustor with asymmetries in the can-to-can coupling", Proc. Combust. Inst.
- S. Kim, "Finite element analysis for acoustic characteristics of combustion stabilization devices", Aerosp. Sci. Technol, 42, pp.229~240 (2015)
- T. Endo, "Mode analysis of a ring of a large number of mutually coupled van der Pol oscillators", IEEE Trans. Circuits Syst, 25, pp.7~18 (1978)
- J. Rayleigh, "The explanation of certain acoustical phenomena", Nature, 18, pp.319~321 (1878)
- N. Noiray, "Investigation of azimuthal staging concepts in annular gas turbines", Combust. Theory Model, 15, pp.585~606 (2011)
- A. Faure-beaulieu, "Imperfect symmetry of real annular combustors:beating thermoacoustic modes and heteroclinic orbits", J. Fluid Mech., 925, pp.R1~ (2021)
- M. Bauerheim, "Symmetry breaking of azimuthal thermo-acoustic modes in annular cavities : a theoretical study", J. Fluid Mech, 760, pp.431~465 (2014)
- G. Ghirardo, "Effect of noise and nonlinearities on thermoacoustics of canannular combustor", J. Eng. Gas Turbines Power, 142, pp.041005~ (2020)
- K. Moon, "Experimental investigation of lean-premixed hydrogen combustion instabilities in a can-annular combustion system", Combust. Flame, 235, pp.111697~ (2022)
- G. Ghirardo, "Quaternion structure of azimuthal instabilities", Phys. Rev. Fluids, 3, pp.113202~ (2018)
- J. Bourgouin, "Self-sustained instabilities in an annular combustor coupled by azimuthal and longitudinal acoustic mode", ASME Conference Proceedings