Large Eddy Simulation of High-Frequency Combustion Instability of Supercritical LOX/GH2 Flame

2010 ◽  
Author(s):  
Shingo Matsuyama ◽  
Junji Shinjo ◽  
Satoru Ogawa ◽  
Yasuhiro Mizobuchi
Keyword(s):  
Large Eddy Simulation ◽  
High Frequency ◽  
Combustion Instability ◽  
Eddy Simulation ◽  
Large Eddy

Large-Eddy Simulation of High-Frequency Combustion Instability in a Single-Element Atmospheric Combustor

2016 ◽  
Vol 32 (3) ◽  
pp. 628-645 ◽  
Author(s):  
Shingo Matsuyama ◽  
Dan Hori ◽  
Taro Shimizu ◽  
Shigeru Tachibana ◽  
Seiji Yoshida ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
High Frequency ◽  
Combustion Instability ◽  
Single Element ◽  
Eddy Simulation ◽  
Large Eddy

Large-Eddy Simulation of Acoustic Flame Response to High-Frequency Transverse Excitations

AIAA Journal ◽  
2019 ◽  
Vol 57 (1) ◽  
pp. 327-340
Author(s):  
V. Sharifi ◽  
A. M. Kempf ◽  
C. Beck
Keyword(s):  
Large Eddy Simulation ◽  
High Frequency ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Flame Response

Large Eddy Simulation of Combustion Instability of Low-Swirl Flames in a Multi-Nozzle Combustor

2017 ◽  
Author(s):  
Weijie Liu ◽  
Bing Ge ◽  
Shusheng Zang ◽  
Mingjia Li ◽  
Wenyan Xu
Keyword(s):  
Large Eddy Simulation ◽  
Heat Release ◽  
Pressure Fluctuation ◽  
Combustion Instability ◽  
Eddy Simulation ◽  
Numerical Result ◽  
Large Eddy ◽  
Reversal Flow ◽  
Flame Flashback ◽  
Flow Vortex

Large eddy simulation of self-induced combustion instability of low-swirl flames in a multi-nozzle combustor is carried out. The unsteady behaviors in the multi-nozzle burner including pressure fluctuation, velocity oscillation, PVC and triggering mechanism are studied in detail. Numerical result is compared with experimental measurement in terms of frequency and amplitude of pressure fluctuation. Results show LES successfully predicts the longitudinal instability mode in the multi-nozzle combustor with a reasonable agreement with experimental data. Flow parameters in the burner, such as pressure, axial velocity and CH4 mass fraction oscillate with the same frequency but different phases. Combustion instability leads to flame flashback into the burner due to the reversal flow. Vortex generation and shedding off in the outer shear layer result in unsteady heat release at the tail edge of the outer flame near combustor wall. Meanwhile, the unsteady heat release feedback to the pressure and flowfield, which is the main reason for inducing combustion instability.

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