Large-Eddy Simulation of Swirling Pulverized-Coal Combustion

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外文摘要：A Eulerian-Lagrangian large-eddy simulation (LES) with a Smagorinsky-Lilly sub-grid scale stress model，presumed-PDF fast chemistry and EBU gas combustion models，particle devolatilization and particle combustion models are used to study the turbulence and flame structures of swirling pulverized-coal combustion。 The LES statistical results are validated by the measurement results。 The instantaneous LES results show that the coherent structures for pulverized coal combustion is stronger than that for swirling gas combustion。 The particles are concentrated in the periphery of the coherent structures。 The flame is located at the high vorticity and high particle concentration zone。

外文关键词：

large-eddy simulationswirling gas-particle reacting flowspulverized coal combustion

作者：

L.Y.Hu、L.X.Zhou、Y.H.Luo、C.S.Xu

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作者单位：

School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China

Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China

会议名称：

International symposium on coal combustion

会议地点：

Harbin(CN)

会议母体文献：

Cleaner combustion and sustainable world

页码：

42-45

出版时间：

2011