叶片间隙对潜水搅拌器流场特性的影响  

Influence of Different Blade Gaps on Flow Field of Submersible Mixer

作　　者：徐顺 汤方平 汪文生 刘玉永 许乔 

机构地区：[1]扬州大学水利与能源动力工程学院,江苏扬州225127 [2]南京贝特环保通用设备制造有限公司,江苏南京210029

出　　处：《中国给水排水》2017年第1期106-109,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51376155);"十二五"农村领域科技计划项目(2012BAD08B03)

摘　　要：潜水搅拌器叶片间隙对搅拌效果有重要影响,是影响流场的一个重要参数。通过CFX软件对不同叶片间隙潜水搅拌器流场进行数值模拟,得到了内部流场图、整个流场图以及外特性参数。对不同叶片间隙潜水搅拌器外特性参数进行分析的结果表明,轴功率和出口流量不受叶片间隙的影响。潜水搅拌器的轴推力与搅拌效果呈正相关。随着叶片间隙的增加,有效搅拌比先增加后减小,最佳叶片间隙值为6 mm,对应的有效搅拌比为84.7%,单位有效能耗为18.0 W。The gap between blades has an important influence on the mixing effect of the submersi- ble mixer, and it is an important parameter influencing the flow field. The flow field of the submersible mixer with different blade gaps was stimulated using CFX software. The internal flow field, the whole flow field and the external characteristic parameters of the submersible mixer were obtained. The external characteristic parameters of the submersible mixer with different blade gaps were analyzed, and the results showed that the axial power and the outlet flow rate were not affected by the blade gap. The axial thrust of the submersible mixer showed a positive correlation with the mixing effect. With the increase of blade gap, the effective mixing ratio increased first and then decreased. The optimal blade gap was 6 mm, the effective mixing ratio was 84.7%, and the effective energy consumption per unit was 18.0 W.

关 键 词：潜水搅拌器 叶片间隙 CFX 有效搅拌比 

分 类 号：X703.3[环境科学与工程—环境工程]