SK型静态混合器的液液分散数值模拟  

Numerical simulation of liquid-liquid dispersion in SK static mixer

作　　者：金作宏 

机构地区：[1]河北美邦工程科技股份有限公司,河北石家庄050035

出　　处：《河北工业科技》2016年第3期214-217,共4页Hebei Journal of Industrial Science and Technology

基　　金：科技型中小企业技术创新基金无偿资助项目(12C26211300743)

摘　　要：为了对静态混合器中的液液分散过程进行深入研究,选用Euler多相流模型和k-ε湍流模型,采用计算流体力学(CFD)的方法,分别计算了单旋和四旋结构的SK型静态混合器的流场。数值模拟结果表明,液液分散过程中四旋结构产生的压降大约是单旋结构的3倍。X<0.04m时,四旋结构湍流强度大,混合效果优于单旋结构;X>0.04m时,单旋结构的旋转强化了对漩涡的作用,混合效果更好。研究发现,在X<0.04m时采用四旋单元,而后采用单旋单元可以取得优秀的混合效果。In order to study the liquid-liquid dispersion of the static mixer,with Euler multiphase model and standard k-εturbulent model,CFD method is used to simulate the flow field of the SK static mixer with single-turn and four-turn structure.The numerical simulation result shows that the pressure drop of four-turn structure is about triple of the pressure drop of single-turn structure in liquid-liquid dispersion.For X〈0.04 m,turbulent intensity of four-turn structure is bigger than that of single-turn structure,and its mixing effect is better.For X〉0.04 m,rotation effect of single-turn structure strengthens vortex,and its mixing condition is better than that of four-turn structure.Thus,four-turn structure is suggested to be applied at X〉0.04 m,whereas single-turn structure at X0.04 m.

关 键 词：化工流体力学 静态混合器 数值模拟 压力降 不均匀系数 

分 类 号：TQ028.8[化学工程]