双曲面搅拌机流场的数值模拟研究  

Numerical Simulation of Flow Field in Hyperboloid Stirrer

作　　者：彭珍珍[1] 赵恒文[1] 郭聪聪[1] 汪文生 曾德全 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098 [2]南京贝特环保通用设备制造有限公司,江苏南京210098

出　　处：《中国给水排水》2009年第19期91-94,共4页China Water & Wastewater

摘　　要：应用计算流体力学(CFD)软件、利用多重参考系法(MRF)对新型的污水搅拌设备——双曲面搅拌机的流场进行数值模拟,考察了搅拌槽内水体的流态特性,并提出了优化建议。结果表明,未加挡板时,切向剪切是搅拌槽内水体的主要流动形式;在搅拌槽周围加上挡板后,可使槽内的水流形态重新分布,使轴向流速显著增加,立体循环运动更明显,更符合污水处理的搅拌形式和速度上的要求。The computational fluid dynamics （CFD） software and multi-reference frame （MRF） method were applied to numerically simulate the flow field in a new wastewatcr stirring equipment--hyperboloid stirrer. The fluid flow characteristic in the stirred tank was investigated, and the optimization suggestion was put forward. The results show that the tangential shear is the main flow pattern of the wastewater in the stirred tank without the baffle. After putting the baffle around the stirred tank, the flow patterns in the stirred tank can be redistributed, the axial velocity can be increased significantly, and the vertical circulation of the wastewater can be more obvious, which is more suitable for the requirement of the stirring pattern and velocity in the wastewater treatment.

关 键 词：计算流体力学(CFD) 双曲面搅拌机 数值模拟 

分 类 号：X703.3[环境科学与工程—环境工程]