Influence of the Repetition Rate of a Nanosecond Pulsed Discharge on the Stabilization of a Turbulent Lean Premixed Flame

2006 ◽  
Author(s):  
Guillaume Pilla ◽  
D Galley ◽  
D. Lacoste ◽  
F. Lacas ◽  
D. Veynante ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Premixed Flame ◽  
Pulsed Discharge ◽  
Lean Premixed

Characteristics of Lean Premixed Flame in Various Oxygen Concentrations Measured by Laser Imaging Techniques

2013 ◽  
Vol 35 (6-8) ◽  
pp. 576-582
Author(s):  
Masaharu Komiyama ◽  
Kenichiro Takeishi ◽  
Yohei Fujita ◽  
Kiyonobu Nakayama
Keyword(s):  
Imaging Techniques ◽  
Premixed Flame ◽  
Laser Imaging ◽  
Lean Premixed ◽  
Oxygen Concentrations

Numerical Simulation of Turbulent Combustion Flows for Coaxial Jet Cluster Burner

2013 ◽  
Author(s):  
Keita Yunoki ◽  
Tomoya Murota ◽  
Keisuke Miura ◽  
Teruyuki Okazaki
Keyword(s):  
Turbulent Combustion ◽  
High Efficiency ◽  
Premixed Combustion ◽  
Premixed Flame ◽  
Gas Temperature ◽  
Lean Premixed Combustion ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Lean Premixed ◽  
Multiple Holes

We have developed a burner for the gas turbine combustor, which was high efficiency and low environmental load. This burner is named the “coaxial jet cluster burner” and, as the name indicates, it has multiple fuel nozzles and holes in a coaxial arrangement. To form lean premixed combustion, this burner mixes fuel and air in the multiple holes rapidly. The burner can change the combustion form between premixed and non-premixed combustion by controlling the mixing. However, the combustion field coexisting with premixed and non-premixed combustion is complicated. The phenomena that occur in the combustion field should be understood in detail. Therefore, we have developed the hybrid turbulent combustion (HTC) model to calculate the form in which non-premixed flame coexists with premixed flame. Turbulent flow has been simulated using a large eddy simulation (LES) with a dynamic sub grid scale (SGS) model coupled with the HTC model. These models were programmed to a simulation tool based on the OpenFOAM library. However, there were unclear points about their applicability to an actual machine evaluation and the predictive precision of CO concentration which affects burner performance. In this study, we validate the HTC model by comparing its results with measured gas temperature and gas concentration distributions obtained with a coaxial jet cluster burner test rig under atmospheric pressure. In addition, we analyze the CO generation mechanism for the lean premixed combustion in the burner.

Combustion and NOx emission characteristics of dual-stage lean premixed flame

2019 ◽  
Vol 160 ◽  
pp. 113951
Author(s):  
Wenhua Zhao ◽  
Penghua Qiu ◽  
Li Liu ◽  
Wenkai Shen ◽  
Yajin Lyu
Keyword(s):  
Premixed Flame ◽  
Nox Emission ◽  
Emission Characteristics ◽  
Lean Premixed ◽  
Dual Stage

scholarly journals Impact of Stretch and Heat Loss on Flame Stabilization in a Lean Premixed Flame approaching Blow-off

2018 ◽  
Vol 148 ◽  
pp. 250-257 ◽  
Author(s):  
Pier Carlo Nassini ◽  
Daniele Pampaloni ◽  
Antonio Andreini
Keyword(s):  
Heat Loss ◽  
Flame Stabilization ◽  
Premixed Flame ◽  
Lean Premixed

10904 A study of combustion promotion effects by using combination flow for lean premixed flame

2015 ◽  
Vol 2015.21 (0) ◽  
pp. _10904-1_-_10904-2_
Author(s):  
Yoshiyuki JIN ◽  
Kazuki KISHIMOTO ◽  
Tadashige KAWAKAMI
Keyword(s):  
Premixed Flame ◽  
Lean Premixed
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