| 耦合天然气详细反应机理的三维湍流预混火焰结构数值预测 |
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| 引用本文： | 蒋勇,邱榕,董刚,范维澄.耦合天然气详细反应机理的三维湍流预混火焰结构数值预测[J].燃烧科学与技术,2005,11(2):109-115. |
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| 作者姓名： | 蒋勇 邱榕 董刚 范维澄 |
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| 作者单位： | 1. 中国科学技术大学火灾科学国家重点实验室,合肥,230026
2. 南京理工大学动力工程学院,南京,210094 |
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| 基金项目： | 国家重点基础研究专项经费资助项目(2001CB409600)，国家自然科学基金资助项目(50276057,50476027)，国家自然科学基金委专项基金资助项目(50323005). |
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| 摘 要： | 以具有279机理的天然气燃烧为例，分别采用涡耗散概念EDC湍流燃烧模型、修正的涡旋破碎EBU湍流燃烧模型以及基于时均值的Arrhenius关系，对燃烧室内复杂的湍流反应流进行了三维数值模拟，并对预测结果进行了分析．结果表明，EDC模型可以较好地反映湍流化学作用，并且能够较好地描述各基元反应，从而为工程实际复杂燃烧情况下其有害排放、中间物质、自由基和痕迹物质生成机理的研究提供基础。
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| 关 键 词： | 详细／半详细化学反应动力学机理 模型 数值模拟 涡耗散概念 |
| 文章编号： | 1006-8740(2005)02-0109-07 |
| 修稿时间： | 2004年6月2日 |
Three-Dimensional Numerical Prediction of the Structure of Turbulent Premixed Flame for Natural Gas Using Linked CFD and Detailed Chemical Kinetics |
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| JIANG Yong,QIU Rong,Dong Gang,FAN Wei-cheng.Three-Dimensional Numerical Prediction of the Structure of Turbulent Premixed Flame for Natural Gas Using Linked CFD and Detailed Chemical Kinetics[J].Journal of Combustion Science and Technology,2005,11(2):109-115. |
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| Authors: | JIANG Yong QIU Rong Dong Gang FAN Wei-cheng |
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| Affiliation: | JIANG Yong~1,QIU Rong~1,DONG Gang~2,FAN Wei-cheng~1 |
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| Abstract: | This paper presents the results of a detailed study of the eddy dissipation concept (EDC) and modified eddy break-up (EBU) model as well as Arrhenius relations (with turbulent effects ignored) respectively applied to a 3-D premixed flame in a chamber.The objectives are to find out how EDC turbulent combustion model can represent the complex chemistry and the turbulence-chemistry interactions can be described by this modeling method.A 279-step chemical mechanism is used to predict rates of reaction in natural gas and air mixtures.It is shown that the temperature and concentration values of the major species predicted by EDC and EBU are consistent and the computational results by simple Arrhenius relations are clear deviations. It indicates the importance of turbulent mixing in turbulent flames. |
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| Keywords: | detailed/semi-detailed chemical reaction kinetics modeling numerical simulation eddy dissipation concept |
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