3D Numerical Simulation of Flow and Mixing Performances in Novel Tri-screw and Four-screw Extruders
Screw extruder is an important equipment for mixing processing.This paper briefly introduces the physical models of novel tri-screw and four-screw extruders.Using the software Polyflow,the three-dimensional transient finite element models are employed to explore the complex flow and mixing characteristics of polymer fluids in tri-screw and four-screw extruders.The mixing index of particles distributed in the special center regions of tri-screw and four-screw extruders are analyzed specially.Moreover,the statistical post-processing,software of Polystat,is used to calculate the mixing index probability distribution,time-averaged mixing efficiency,instantaneous time mixing efficiency,logarithmic stretching rate,shear rate and axial distance mixing index.Parameters mentioned before between the four-screw,twin-screw and tri-screw extruders are compared in order to better understand the mixing mechanism of the novel four screw extruder.The results show that the mixing efficiency of the four-screw extruder is better than that of the twin-screw extruder and the tri-screw extruder.
tri-screw extruder four-screw extruder mesh superposition technique mixing efficiency
Chongxin Wang Xiangzhe Zhu
School of Mechanical Engineering,Liaoning Shihua University,Fushun,China
国际会议
大连
英文
178-183
2018-12-21（万方平台首次上网日期，不代表论文的发表时间）