| 摘要: |
| 湍流预混燃烧的大涡模拟数值计算近来受到很大的关注,为了进一步发展湍流预混燃烧模型,利用正在发展的湍流预混燃烧模型等值面集合的G函数方法、层流预混火焰生成流型的化学热力学建表FGM方法、G函数/FGM耦合方法三种燃烧模型,对甲烷/空气湍流本生灯火焰进行了大涡模拟计算,并对上述燃烧模型进行了比较。大涡模拟结果表明,G函数方法能够较为准确捕捉火焰的传播特性,FGM方法能够捕捉到火焰和湍流的相互作用,但无法准确预测火焰的传播特性。而耦合的方法既可以捕捉火焰的传播特性,又能够捕捉到火焰和湍流的相互作用。 |
| 关键词: 湍流预混火焰 本生灯火焰 G函数 火焰面数据库 |
| DOI： |
| 分类号:TK16 |
| 基金项目:国家自然科学基金(51176178)；国家自然科学重点基金(50936005)。 |
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| A Comparison of Three Different Turbulent Premixed Combustion Models in Busen Flames |
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HAN Chao,ZHANG Pei ,YE Tao-hong,CHEN Yi-liang
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(Department of Thermal Science and Energy Engineering,University of Science and Technology of China,Hefei 230027,China)
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| Abstract: |
| Turbulent premixed combustion modeling in large eddy simulation(LES)has attracted a lot of attention. In order to develop turbulent combustion model,in this work,three combustion models including G-equation,flamelet generated manifolds(FGM)method and the coupled G-FGM method were applied to simulate the turbulent methane/air Busen flame using LES. The predictions of these models were compared in detail. The results indicate that G-equation method could capture the flame propagation precisely. FMG method takes the interaction of turbulence and flame into consideration but cannot predict the flame propagation exactly. The coupled levelset/FGM method could have both advantages so that it has potential applications. |
| Key words: Turbulent premixed flame Busen flame G function Flamelet table |
