Oil-rich blow out numerical simulation research of the vapor flame holder
This paper structured grid modeling for the computational domain of the flow field around vapor flame holder,and by setting multiple Working conditions points about blow out process on the stabilizer,got a number of cold flow field conditions of stabilizer approaching blow out.By analyzing the change of cold flow field from stable combustion to oil-rich blow out,especially the change of fuel concentration field,and comparing the fuel concentration at room temperature(900-1000K)operating conditions at low temperature(500-750K)operating conditions,summed up the reasons for vapor flame holder blow out in different conditions.The results showed that the oil-rich blow out occurs mainly due to the local oil-rich region in recirculation zone for room temperature operating conditions,and the blow out occurred because too little oxygen and too much fuel made it difficult to maintain combustion.However,the reason of blow out for low temperature operating conditions is that the fuel has a poor evaporation performance at low temperature,and many parts of the recirculation zone are lack of fuel vapor.So the reaction rate is very low in these parts.What is more,associated with the front flow,lots of droplets entered into the recirculation zone,and absorbed the heat generated by the reaction,then the blow out occurred.
vapor flame holder oil-rich blow out numerical simulation cold flow field fuel concentration distribution
Ma Xiaosen Wang Qiang Gao Jiachun
School of Energy and Power Engineering,Beihang University,Beijing,100191,China School of Energy and Power Engineering,Beihang University,Beijing,100191,China;Collaborative Innovat Shenyang Aero Engine Design and Research Institute,Shenyang,110015,China
国际会议
The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)
北京
英文
1-6
2014-09-15（万方平台首次上网日期，不代表论文的发表时间）