STFT와 DMD를 이용한 GH2/GO2 로켓 연소기의 연소불안정성 분석
Analysis of Combustion Instability in a GH2/GO2 Rocket combustor by Adopting Short Time Fourier Transform and Dynamic Mode Decomposition
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초록
The post-processing analysis tools, Short Time Fourier Transform (STFT) and Dynamic Mode Decomposition (DMD) were applied to analyze dynamic characteristics of the GH2/GO2 rocket model combustor. The STFT analysis was performed with pressure data in the chamber to exhibit the appearance of frequency components at instant time. The STFT results indicate resonant frequencies of signal through their amplitudes. DMD analysis was conducted with the planar pressure data to extract the resonant frequencies and damping coefficients of acoustic modes. The damping coefficient is a parameter to evaluate the stability of a certain pressure oscillation in a dynamic system. By combining the results of STFT and DMD, the appearance of the resonant frequencies causing unstable combustion can be determined.
Abstract
The post-processing analysis tools, Short Time Fourier Transform (STFT) and Dynamic Mode Decomposition (DMD) were applied to analyze dynamic characteristics of the GH2/GO2 rocket model combustor. The STFT analysis was performed with pressure data in the chamber to exhibit the appearance of frequency components at instant time. The STFT results indicate resonant frequencies of signal through their amplitudes. DMD analysis was conducted with the planar pressure data to extract the resonant frequencies and damping coefficients of acoustic modes. The damping coefficient is a parameter to evaluate the stability of a certain pressure oscillation in a dynamic system. By combining the results of STFT and DMD, the appearance of the resonant frequencies causing unstable combustion can be determined.
참고문헌 (18)
- S.J. Kang, "Feasibility study of moon exploration satellite launch using korea space launch vehicle", The Korean Society for Aeronautical and Space Sciences Conference Magazine, pp.1097~1100 (2008)
- T. Poinsot, "Prediction and control of combustion instabilities in real engines", Proc. Combust. Inst., 36, pp.1~28 (2017)
- F. Richecoeur, "Experimental investigation of high-frequency combustion instabilities in liquid rocket engine", Acta Astronaut, 62, pp.18~27 (2008)
- G.J. Park, "Measurement of film thickness in gas-centered swirl coaxial injectors", 50th AIAA, SAE, pp.ASEE Joint Propulsion Conference, 2014
- F.E.C Culick, "Overview of combustion instabilities in liquid-propellant rocket engine", Progr. Astronaut. Aero., 169, pp.3~38 (1995)
- A. Urbano, "Study of flame response to transverse acoustic modes from the LES of a 42-injector rocket engine", Proc. Combust. Inst., 36(2), pp.2633~2639 (2017)
- S.K. Kim, "Finite element analysis of self-excited instabilities in a lean premixed gasturbine combustor", Int. J. Heat Mass Transfer, 120, pp.350~360 (2018)
- 왕위엔강, "DMD기법을 이용한 모형 가스터빈의 연소불안정성 분석", 한국연소학회지, 24(1), pp.51~56 (2019), 한국연소학회[DOI]
- 김진아, "피드백 전달함수를 이용한 연소 안정성 해석", 한국연소학회지, 21(3), pp.24~31 (2016), 한국연소학회
- K.K. Chen, "Variants of dynamic mode decomposition: Boundary condition, koopman, and fourier analyses", J. Nonlinear Sci., 22(6), pp.887~915 (2012)
- P.J. Schmid, "Dynamic mode decomposition of numerical and experimental data", J. Fluid Mech., 656, pp.5~28 (2010)
- G. Golub, "Calculating the singular values and pseudo-inverse of a matrix", J. Soc. Ind. Appl. Math., 2(2), pp.205~224 (1965)
- G. Jourdain, "Application of dynamic mode decomposition to acoustic-modes identification and damping in a 3-dimensional chamber with baffled injectors", J. Sound Vib., 332(18), pp.4308~4323 (2013)
- 손진우, "화염 전달함수 및 DMD 기법을 이용한 모형 가스터빈의 연소불안정성 평가", 한국연소학회지, 22(2), pp.1~8 (2017), 한국연소학회[DOI]
- S.M. Jeong, "Analysis for characteristic of turbulent combustion and combustion instability of gaseous hydrogen", gaseous oxygen rocket combustor using dynamic mode decomposition, Pusan National University, 2018
- S.M. Jeong, "Analysis of turbulence combustion characteristic and instability for GH2GO2rocket combustor", The 50th KSPE Fall Conference, pp.695~698 (2018)
- "Chemical kinetic mechanisms for combustion applications" (2003)[URL]
- H.T. Luong, "Application of post-processing tools for analysis of combustion instability in a combustor", The 30th International Symposium on Transport Phenomena, pp.1~3 (2019)