基于搅拌流场分析的潜水搅拌器优化设计及工程应用  

Optimization Design of Submersible Mixer Based on a Simulation Study of Agitated and Engineering Application

作　　者：徐伟幸[1] 袁寿其[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《中国农村水利水电》2011年第6期32-35,共4页China Rural Water and Hydropower

基　　金：江苏省科技发展计划项目(BM2002805)

摘　　要：潜水搅拌器作为主要的污水处理设备,其搅拌和推流的效果对污水的处理质量有着重要影响。对于潜水搅拌器的搅拌流场,应用k-ε湍流模型来封闭运动方程,采用贴体坐标变换技术,利用Fluent软件对该复杂流场进行求解。结果表明:搅拌器叶轮运行时产生旋向射流,按照类似椭圆形的等速度线向前推进,中心速度较快,向外做扩展运动,利用体积流来输送液体。并通过改变搅拌器叶轮的设计参数,对模拟结果进行对比分析,提出优化设计方案,现场运行效果良好,效益显著。The submersible mixer as major sewage treatment equipment is very important to sewage treatment for affecting mixing and pushing flow.The flow formulation is founded as console formulation first,and with the body-fitted coordinate system and standard k-ε turbulent model,the numerical simulation of the internal 3-D incompressible turbulent flow agitated flow field of submersible mixer is carried out by CFD software Fluent.The results show that： the mixer impeller produced vortex jet flow,the constant velocity lines advanced as ellipse,the velocity along the centerline are larger than others,and volume flow is utilized to transport the liquid.And by changing some design parameters of mixer impeller,we can compare and analyze the numerical simulation results and propose some optimal methods.The impeller has been employed in the plan t and passed field running experiment.Its mixing and propelling performance is excellent.

关 键 词：潜水搅拌器 优化设计 搅拌流场 工程应用 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]