多孔介质模型在二次滤网内流场分析中的应用  

Application of porous medium model in analysis of flow field around secondary filter

作　　者：杨军虎[1] 马静先[1] 唐莲花[1] 谢玲丽[1] 

机构地区：[1]兰州理工大学流体动力与控制学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2007年第2期58-61,共4页Journal of Lanzhou University of Technology

摘　　要：使用计算流体动力学软件FLUENT分析了二次滤网的内部流动,并利用其结果输出功能计算了滤网阻力.多孔介质模型形象地描绘出了二次滤网的内部流场,获得了该型号滤网的内部流动规律.滤网面的形状改变了流体的流动,加强筋板使局部流动复杂化,但同时起了导流作用.对排污工况研究发现,排污顺畅.The flow around secondary filter was analyzed with CFD software FLUENT and the resistance of filter was evaluated by using the output function resulted from this analysis. The flow field around the secondary filter was vividly characterized with a porous medium model, so that the flow pattern around this kind of filter was readily obtained. The surficial contour of the filter altered the fluid flow and, although the stiffening ribbing of the filter made local flow complicated, it played the role of flow guiding, instead. It was found by using it for sewage draining that the draining was unhindered.

关 键 词：二次滤网 多孔介质模型 内部流动 阻力 

分 类 号：TK730.2[交通运输工程—轮机工程]