LES modeling of a swirling diffusion flame and validation of different SGS stress and combustion models

摘要：

A methane-air swirling diffusion ame is studied by large-eddy simulation (LES) using a second-order moment (SOM) and a simplified PDF sub-grid-scale (SGS) combustion models, a Smagorinsky-Lilly (SL) and a dynamic kinetic energy (DKE) sub-grid-scale (SGS) stress models. All of the SGS models adopted here give the results with only slight difference, but the DKE+SOM models are somewhat better than other SGS models. The predicted ame shape with a neck region is in agreement with that observed in experiments. The predicted ame shape and length obtained using the DKE+SOM models are better than those obtained using other SGS models.

关键词： sub-grid-scale combustion model sub-grid-scale stress model large-eddy simulation swirling flame

作者: L.Y.Hu L.X.Zhou Y.H.Luo

作者单位: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）