径向喷射规整旋流器内部流场研究  

Study on the Flow Field in Radial Jet Cyclone

作　　者：翁建松 刘根凡[1] 麦浚宇 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《流体机械》2014年第4期11-16,5,共7页Fluid Machinery

摘　　要：为了揭示径向喷射规整旋流器(RJC)的高效分离机理,在非稳态下采用雷诺应力模型(RSM)对其内部气相流场进行了数值模拟。与Stairmand型旋风分离器(SC)对比发现,RJC的流场更具有轴对称性,切向速度值更大,短路流量更小,更有利于细小颗粒的分离,但是RJC的压降较大。对比"圆柱"型内筒和"圆锥"型内筒2种情况下RJC的短路流量发现,内筒为"圆锥"时,RJC的短路流量更小。To reveal the efficient separation mechanism of Radial Jet Cyclone （RJC） ,numerical simulation and calculation were petforlned on the flow field in unsteady state using Reynolds stress model. Compared to the Stairlnand Cyclone （SC） ,the flow field in RJC has a more axisylnlnetric structure, a larger tangential velocity and slnaller short-circuit flow rate which ensures better separation perforlnance for fine partieles,but the pressure drop is higher. Moreover,the short-circuit flow rate of a RJC with a cone shape inner-shell is smaller than that with a cylinder shape inner-shelh

关 键 词：旋风分离器 数值模拟 短路流量 RSM 流场 

分 类 号：TH138[机械工程—机械制造及自动化] TK233.4[动力工程及工程热物理—动力机械及工程]