小屏后涡量分布的实验研究  

Experiments on the vorticity distribution behind the small panel

作　　者：何伯述[1] 刁永发[2] 许晋源[2] 陈昌和[1] 

机构地区：[1]清华大学煤的清洁燃烧技术国家重点实验室,北京100084 [2]西安交通大学能源与动力工程学院,西安710049

出　　处：《上海理工大学学报》2001年第3期255-259,共5页Journal of University of Shanghai For Science and Technology

基　　金：机械工业技术发展基金资助项目(95JB1101)

摘　　要：使用六线涡量探针在切向炉HG-2008-YM2的冷模上测量了其小分隔屏后气流的速度及涡量分布,得到了模型炉膛内描述湍流特征的参数,如湍动度、倾斜因子及平坦因子等,为热偏差成因及对策研究提供了依据. 实验结果表明,在分隔屏区域,涡量场的分布和速度场一样也具有贴壁特征,小分隔屏的存在对其后的速度场及涡量场有明显的影响,由于翼型效应,右侧屏后出现了分离涡.A 6-sensor hot-wire probe is used to measure the velocity and the vorticity fields behind the SH panel region of a tangential-firing furnace (TFF). The turbulent characteristic parameters are presented in the paper such as turbulent intensity, skewness factor and flatness factor in a TFF model. The result confirms that the real flow field is not Gaussian. The vorticity fields are also carried out to help understanding the aerodynamics of the flow in that region. It can be concluded that the existing small panel in the upper tangential-firing furnace significantly affects the flow behind the multipanels. Some vortices seem to appear in the right half panel region due to airfoil effects.

关 键 词：切向炉 分隔屏 涡量 倾斜因子 平坦因子 

分 类 号：O357.1[理学—流体力学] V211.7[理学—力学]