富氧燃烧详细机理评估及机理简化

被引：15

作者：

胡帆

李鹏飞

郭军军

柳朝晖

王凯

郑楚光

机构：

[1] 华中科技大学能源与动力工程学院煤燃烧国家重点实验室

来源：

工程热物理学报 | 2018年 / 39卷 / 11期

基金：

国家重点研发计划;

关键词：

富氧燃烧; 机理评估; 机理简化; 骨架机理; NOx;

D O I：

暂无

中图分类号：

TK16 [燃料与燃烧];

学科分类号：

080707 [能源环境工程];

摘要：

在富氧燃烧中,反应物被大量CO2稀释,其反应动力学发生明显变化。本文系统地研究了甲烷富氧燃烧的详细机理和骨架机理.为此,首先对6个详细机理在典型富氧燃烧实验下的氧化性能进行评估.然后将预测精度最好的详细机理与不同NOx机理进行耦合与验证,找出对NO预测最好的机理。最后将预测氧化和NO都最好的详细机理进行了机理简化,并进行了系统验证。结果表明,USC-MechⅡ机理在富氧燃烧工况下具有最好的氧化预测精度,且有效考虑了富氧燃烧下CO2化学影响引起的CO浓度变化;USC-MechⅡ机理耦合GRI-Mech 2.11中NOx机理对NO排放预测精度最好;本文简化得到的38组分、180步反应的骨架机理在点火延迟时间、火焰传播速度以及PSR中温度和NO排放预测等方面和详细机理具有很好的一致性。

引用

页码：2542 / 2548

页数：7

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