LES기반 연소모델과 Helmholtz 방정식을 이용한 LIMOUSINE 버너의 연소불안정 해석

다국어 초록 (Multilingual Abstract)

This study has numerically investigated the flame—acoustics interactions in the turbulent partially premixed flame field. In the present approach, in order to analyze the combustion instability, the present approach has employed the LES-based combustion model as well as the Helmholtz solver. Computations are made for the validation case of the partially premixed LIMOUSINE burner. In terms of the FFT data, numerical results are compared with experimental data. Moreover, Helmholtz equation in frequency domain is solved by combining CFD field data including the flight time from a nozzle to the flame zone. Based on numerical results, the detailed discussions are made for the essential features of the combustion instability encountered in the partially premixed burner.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. LIMOUSINE 버너
• 3. 결론
• References

참고문헌 (Reference)

1 S. Roux, "Studies of mean and unsteady flow in a swirled combustor using experiments, acoustic analysis, and large eddy simulations" 141 : 40-54, 2005

2 J. C. Roman, "Non linear Effects in a Lean Partially Premixed Combustor During Limit Cycle" 2012

3 S. Tufano, "Modelling Flame-generated Noise in a Partially Premixed, Bluff Body Stabilized Model Combustor" 2012

4 I. Hernandez, "LES and Acoustic Analysis of Thermo-acoustic Instabilities in a Partially Premixed Model Combustor, Combust, spray and flow dynamics for aerospace propuls." 341 : 121-130, 2013

5 F. Nicoud, "Acoustic modes in combustors with complex impedance and multidimenstional active flame" 45 (45): 426-447, 2007

6 M. Bauerheim, "A theoretical study of mean azimuthal flow and asymmetry effects on thermos-acoustic modes in annular combustion" 35 : 3219-3227, 2015

7 Jean-François Parmentier, "A simple analytical model to study and control azimuthal instabilities in annular combustion chambers" 159 : 2374-2387, 2012

8 김정진, "1D Lumped Method를 이용한 모형 부분 예혼합 가스터빈 연소기의 연소불안정 해석" 한국연소학회 22 (22): 39-45, 2017