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氢气-空气-稀释气混合气层流燃烧速度的测定和火焰稳定性分析 被引量:9

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摘要 利用球型发展火焰研究了常温常压下不同燃空当量比(0.4~4.5)、稀释气(N2,CO2和15%CO2+85%N2)和稀释度(0,0.05,0.10和0.15)时氢气-空气-稀释气混合气的预混层流燃烧速度和马克斯坦长度,分析了火焰拉伸对火焰传播速度的影响.研究结果表明:氢气-空气-稀释气混合气的层流燃烧速度和马克斯坦长度均随稀释度的增大而减小,火焰稳定性下降,胞状火焰前锋面出现的半径位置提前.在同一稀释度下,层流燃烧速度在当量比为1.8处达到最大值,马克斯坦长度随当量比的增加而增大.CO2作为稀释气对层流燃烧速度和马克斯坦长度的影响大于N2作为稀释气对层流燃烧速度和马克斯坦长度的影响.
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第20期2514-2525,共12页 Chinese Science Bulletin
基金 国家自然科学基金重点项目(批准号:50636040) 国家自然科学基金优秀创新群体项目(批准号:50521604) 国家重点基础研究发展计划项目(编号:2007CB210006)资助
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共引文献71

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