| 两相圆湍射流颗粒弥散与速度相似性大涡模拟 | |
| 王兵 ; 张会强 ; 王希麟 ; WANG Bing ; ZHANG Hui-qiang ; WANG Xi-lin | |
| 2010-06-07 ; 2010-06-07 | |
| 关键词 | 大涡模拟 两相圆湍射流 颗粒倾向性分布 速度相似性 large-eddy simulation two-phase round turbulent jet particle preferential distribution velocity similarity O359 |
| 其他题名 | Large-eddy simulation of particle dispersion and velocity similarity in a two-phase round turbulent jet |
| 中文摘要 | 气相采用大涡模拟方法、颗粒相采用拉格朗日轨道模型,对高雷诺数两相圆湍射流进行了数值模拟,研究了一种中等Stokes颗粒在大尺度涡结构中弥散特点以及两相速度统计特征.研究表明,颗粒弥散同时受流动涡结构和颗粒惯性决定,颗粒在涡结构的边缘或者涡与涡交织区域颗粒数密度高,形成倾向性分布.沿中心轴线两相平均速度衰减不同,颗粒相速度衰减慢于气相.射流近场两相速度沿径向变化显著,在射流远场两相平均速度都具有相似性,沿径向颗粒相平均速度衰减慢、分布平稳.; A high-Reynolds two-phase round turbulent jet was numerically simulated by means of large eddy simulation for gas-phase and particle trajectory model for particle-phase.The dispersion behavior of particles with median Stokes number in large scale structures was studied.Two-phase statistical velocities were compared with each other.It's shown that particle dispersion is dominated both by large eddy structures and particle inertia,resulting in a high particle concentration distribution in the edge of vortex structures or interlaced regions of vortexes(called as particle preferential distribution).The decaying rate of two-phase velocity in the axial direction is different,and the particle-phase velocity decays slower than that of gas-phase.In the near field,two-phase velocities differ from each other significantly.In the far field,two-phase mean velocities are similar,and particle velocity decays radially slower.; 国家自然科学基金(50706021); 高校博士点基金(20070003018) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/37543]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 王兵,张会强,王希麟,等. 两相圆湍射流颗粒弥散与速度相似性大涡模拟[J],2010, 2010. |
| APA | 王兵,张会强,王希麟,WANG Bing,ZHANG Hui-qiang,&WANG Xi-lin.(2010).两相圆湍射流颗粒弥散与速度相似性大涡模拟.. |
| MLA | 王兵,et al."两相圆湍射流颗粒弥散与速度相似性大涡模拟".(2010). |
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