摘要
通过六折叶搅拌桨建立结构模型并对其进行网格划分,采用计算流体动力学方法(CFD),对其在不同桨叶角度下的槽内流场分布规律及功率的影响进行分析。仿真计算表明:六折叶桨以轴向排液为主,其搅拌桨功率随折叶角度增加成线性增长关系,同时流场内湍流动能随着角度增加峰值也就越高,其具有的能量波动越大,搅拌桨剪切破碎能力越强,对于破碎能力需求不高的场合可适当减小折叶角度。
The structural model of 6-Pitched-Blade Turbine(PBT-6)stirring impeller was established and meshed.The flow field distribution and the influence of power were analyzed by computational fluid dynamics(CFD)method under different blade angles.It was found that the 6-Pitched-Blade Turbine impeller mainly discharges liquid in axial direction,and its power increases linearly with the increase of blade angle.At the same time,with the increase of the angle,the peak value of turbulent flow energy in the flow field will be higher,and the greater the energy fluctuation,the stronger the shear breaking ability of the impeller.For the situation where the demand for breaking ability is not high,the blade folding angle can be appropriately reduced.
作者
罗松
周启兴
陈紫微
彭明明
Luo Song;Zhou Qixing;Chen Ziwei;Peng Mingming(Nanchang Jiaotong Institute,Jiangxi Nanchang330000)
基金
江西省教育厅科学技术研究项目(GJJ181497)。
