低NOx自激振荡射流燃烧器.pdf

第30 卷 第8 期 中 国 电 机 工 程 学 报 Vol.30 No.8 Mar.15, 2010 32 2010 年3 月15 日 Proceedings of the CSEE ©2010 Chin.Soc.for Elec.Eng. 0258-8013 (2010) 08-0032-07 O 362 A 470 20 文章编号： 中图分类号： 文献标志码： 学科分类号： ⋅ 低NO 自激振荡射流燃烧器 x 米建春，李鹏飞 (湍流与复杂系统国家重点实验室(北京大学) ，北京市 海淀区 100871) Low NO Self-excited Oscillating-jet Burners x MI Jian-chun, LI Peng-fei (State Key Laboratory of Turbulence and Complex Systems(Peking University), Haidian District, Beijing 100871, China) ABSTRACT: A small flow ejecting into a relatively large 给出利用自激振荡射流现象进一步发展工业燃烧器的建议。 specific chamber can produce large-scale low-frequency 关键词：燃烧器；湍流混合；NO ；辐射换热；自激振荡 x oscillations, this jet is termed as a self-excited oscillating jet. 射流 The self-excited oscillation imposes a profound influence on turbulent mixing process: i.e., it not only enhances large-scale 0 引言 engulfment or entrainment but also simultaneously decreases the 流体经由一相对小的喷嘴射入一相对大的 molecular mixing rate. Previous combustion experiments reveal 突扩腔体时，构成的射流会自然地发生整体低频振 that the self-excited oscillating jet burners always produce relatively larger flames with more soot, t