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壁面反应对微小通道内燃烧影响的数值模拟
Authors
冯耀勋
张立志
杨浩林
赵黛青
Publication date
1 January 2011
Publisher
Abstract
对微小通道内氢气/空气预混火焰进行了数值模拟。通过对比考虑壁面反应和不考虑壁面反应的微通道内燃烧特性的差异,考察了壁面反应对微通道内燃烧状况的影响,揭示了壁面附近自由基行为和壁面反应、气相反应的相互关系,并探讨了不同尺度下壁面反应效应的程度。结果表明,壁面反应改变了微火焰结构,近壁面附近的自由基被吸附,在径向上出现了明显的指向壁面的扩散流,使得气相中的自由基浓度降低,以H基尤为显著。壁面反应不但能够引起着火延迟,还能引起熄火点提前,从而降低了微火焰稳燃极限。在更小的燃烧尺度下,壁面反应降低微火焰可燃极限范围将更加明显
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/21825
Last time updated on 17/12/2019
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/21827
Last time updated on 17/12/2019