徐小婷,张朋远,张方芳,陈德敏,黄新杰,董磊,王帅帅

• 1:安徽工业大学建筑工程学院
• 2:中国能源建设集团安徽省电力设计院有限公司

摘要(Abstract)：

为了优化微电子机械系统中的微燃烧器，采用数值模拟与实验验证相结合的方法，研究微燃烧器结构(回热管有/无肋片、旋流角度θ)对可燃极限、流场分布、传热效应、污染物排放等的影响。结果表明：不同结构参数对可燃极限影响显著，有肋片的脱火、回火极限高于无肋片，在有肋片的情况下，随着旋角θ的增加可燃极限范围逐渐扩大。设有肋片的微燃烧器显著提升轴向速度和湍流强度，形成更大的倒V型区域，且有肋片案例中，随旋流角度θ增大，轴向速度分布由中心单峰分裂为双峰，峰值向壁面移动并增大。随着旋角θ的增加，燃烧室内温度和OH逐渐增加。最后，对比发现，有肋片的回热管且θ=30°，燃烧室外壁面平均温度最高，温度均匀性最好，辐射效率最大。燃烧效率整体上随着θ的增加而增加，但是θ=15°且无肋片工况下CO排放最低。综合考虑燃烧稳定性和辐射效率，有肋片θ=30°时为最佳设计。上述结论为高性能微燃烧系统设计提供了关键理论依据与工程指导。

关键词(KeyWords)： 数值模拟;微燃烧器;可燃极限;燃烧性能;旋流角度

Abstract:

Keywords:

基金项目(Foundation): 安徽省教育厅高校自然科学研究(2023AH051097);; 中国博士后面上基金(2024M763572)

作者(Author): 徐小婷,张朋远,张方芳,陈德敏,黄新杰,董磊,王帅帅

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