采用稳态的和非稳态的火焰面模型同时对一个湍流甲烷射流扩散火焰进行了数值模拟,比较了两者对湍流平均火焰结构、活性自由基和污染物(氮氧化物)排放的模拟效果.速度场采用κ-ε模型计算,守恒标量混合物分数的分布通过其概率密度函数(PDF)输运方程的求解得到.稳态的火焰面结构由查询火焰面数据库得到,而非稳态的火焰面结构由火焰面方程和流场方程耦合求解来计算.采用详细的GRI-Mech 3.0机理描述甲烷的氧化和氮氧化物的形成.数值模拟结果和实验数据作了广泛的对比,验证了火焰面模型对湍流扩散燃烧的定量模拟能力.
参考文献
| [1] | Peters N .Laminar Diffusion Flamelet Models in NonPremixed Turbulent Combustion[J].Progress in Energy and Combustion Science,1984,10(03):319-339. |
| [2] | Pope S B .PDF Methods for Turbulent Reactive Flows[J].Progress in Energy and Combustion Science,1985,11(02):119-192. |
| [3] | Klimenko A Y;Bilger R W .Conditional Moment Closure for Turbulent Combustion[J].Progress in Energy and Combustion Science,1999,25(06):595-687. |
| [4] | Darabiha N .Transient Behaviour of Laminar Counterflow Hydrogen-Air Diffusion Flames with Complex Chemistry[J].Combustion Science and Technology,1992(86):163-181. |
| [5] | 王海峰;陈义良.变拉伸作用下层流扩散火焰面的动力学响应特性[A].,2003:547-558. |
| [6] | Pitsch H;Chen M;Peters N.Unsteady Flame[et Modeling of Turbulent Hydrogen-Air Diffusion Flames[A].The Combustion Institute,1998:1057-1064. |
| [7] | Barlow R S;Frank J H.Effects of Turbulence on Species Mass Fractions in Methane/Air Jet Flames[A].The Combustion Institute,1998:1087-1095. |
| [8] | 王海峰,陈义良,蔡晓丹,李艺.湍流射流扩散火焰的层流火焰面模拟[J].推进技术,2003(01):58-62. |
| [9] | COELHO P J;Peters N .Unsteady Modeling of a Piloted Methane/Air Jet Flame Based on the Eulerian Particle Flamelet Model[J].Combustion and Flame,2001,124:444-465. |
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