AM05-19-009 二次燃料噴射による希薄予混合燃焼の燃焼制御の数値解析(燃焼・反応流のモデリングと制御2,一般講演)

概要

論文の詳細を見る
This paper presents a numerical study on the mechanisms of combustion instability of lean premixed combustion and secondary fuel control. The numerical method is based on large eddy simulation (LES) and the flamelet model. The instability mechanism can be attributed to the coupling between pressure oscillations, velocity fluctuations and heat release fluctuations. Secondary fuel injection is tested to change the coupling between the pressure and heat release. With the injection, the flame shape is changed and the heat release rate is spatially altered, leading to smaller coupling between the pressure and heat release fluctuations. The resultant pressure oscillation amplitude is smaller than that of the no-injection case. This result indicates that the secondary fuel injection can be effective in controlling combustion oscillations in a lean premixed combustion system.
日本流体力学会の論文
2005-09-05