The Influence of Fuel-Air Swirl Intensity on Flame Structures of Syngas Swirl-Stabilized Diffusion Flame

作     者：Weiwei Shao Yan Xiong Kejin Mu Zhedian Zhang Yue Wang Yunhan Xiao 

作者机构：Research Center for Energy and Power Chinese Academy of Sciences Beijing China Key Laboratory of Advanced Energy and Power Chinese Academy of Sciences (Institute of Engineenng Thermophysics) Beijing China P.O. Box 2706 Beijing 100190 China Nanjing TianLing Energy Tech. Co Ltd Jiangsu 210018 China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2010年第19卷第3期

页      面：276-283页

核心收录：

学科分类：081704[工学-应用化学] 080703[工学-动力机械及工程] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：support by the National High Technology R&D Project of China (No. 2006AA05A104) National Natural Science Foundation of China (No. 50806076,50876110)to the research work 

主　　题：Diffusion Flame Swirl Intensity Flame Structure OH-PLIF 

摘      要：Flame structures of a syngas swirl-stabilized diffusion flame in a model combustor were measured using the OH-PLIF method under different fuel and air swirl *** flame operated under atmospheric pressure with air and a typical low heating-value syngas with a composition of 28.5% CO,22.5% H2 and 49% N2 at a thermal power of 34 *** indicate that increasing the air swirl intensity with the same fuel,swirl intensity flame structures showed little difference except a small reduction of flame length;but also,with the same air swirl intensity,fuel swirl intensity showed great influence on flame shape,length and reaction zone ***,compared with air swirl intensity,fuel swirl intensity appeared a key effect on the flame structure for the model *** OH-PLIF images showed that three distinct typical structures with an obvious difference of reaction zone distribution were found at low swirl intensity,while a much compacter flame structure with a single,stable and uniform reaction zone distribution was found at large fuel-air swirl *** means that larger swirl intensity leads to efficient,stable combustion of the syngas diffusion flame.