Flow Characteristics Analysis of A New Combination Agitator Based on CFD

The computational fluid dynamics (CFD) method was used to simulate the velocity distribution, turbulent kinetic energy distribution and power consumption characteristics of two new types of large-blade combined agitators and traditional single-blade six-blade disc turbines designed for EVOH polymerization kettle in a factory. The results show that the new type of large-blade combination agitator has a better bottom turbulent kinetic energy effect, which can effectively avoid the stirring dead zone caused by single-layer stirring. At the same speed, compared with six-straight blade disc turbines, the torque and unit energy consumption of the two types of large-blade combination agitators are higher, but the effective stirring ratio is also increased by 31% and 30.8%, which can enhance the stirring effect.