Abstract
［［Objective ］］ To investigate the influence of material slip on the inner wall of the barrel and the surface of the screw on the extrusion process of the co -rotating twin screw.［［Methods ］］ The 3D model is designed by the relative motion method,and different slip boundary conditions are set and simulated by the finite element method.The relevant physical field data are obtained by simulation analysis,and the volume flow rate is calculated.The physical field of the extrusion process is studied.［［Results ］］ Compared with the non -slip condition,the pressure in the flow channel decreases,the shear rate decreases,and the viscosity increases under the screw slip condition.Under the condition of wall slip,the pressure decreases,the shear rate decreases,and the viscosity increases at the gap between the screw and the barrel.On the contrary,the pressure increases,the shear rate increases,and the viscosity decreases at the screw engagement.The analysis of the volume flow rate in the extrusion process showed that the yield increased by 28% under the screw slip condition,and the yield decreased by 62.5% under the wall slip condition.［［Conclusion ］］ The occurrence of the wall slip phenomenon helps to improve the shear ability of the screw at the screw engagement,and the occurrence of the screw slip phenomenon is beneficial to improve the extrusion yield of the co -directed twin screw.
Publication Date
2-18-2025
First Page
99
Last Page
105,144
DOI
10.13652/j.spjx.1003.5788.2022.60118
Recommended Citation
Zhen, XU; Zihao, LIU; and Zhigang, HUANG
(2025)
"Influence of slip conditions on the extrusion process of meshing co-direction twin screw,"
Food and Machinery: Vol. 40:
Iss.
9, Article 15.
DOI: 10.13652/j.spjx.1003.5788.2022.60118
Available at:
https://www.ifoodmm.cn/journal/vol40/iss9/15
References
[1] 程丽丽.草莓保鲜运 输中强制通风预冷与温度分布的相关性[J].食品与机械,2020,36(2):151-154.CHENG L L.Correlation between forced ventilation precooling and temperature distribution in strawberry preservation and transportation [J].Food & Machinery,2020,36(2):151-154.
[2] KANATT S R.Pectin from fruit peel waste:a sustainable source for production of active packaging films [J].Packaging Technology and Science,2024,37(6):487-501.
[3] 代祥基,刘子豪,黄志刚.啮合同向差速双螺杆挤出机挤出聚乳酸流场分析 [J].食品与机械,2024,40(4):59-64,83.DAI X J,LIU Z H,HUANG Z G.Flow field analysis of polylactic acid extrusion by meshing simultaneous differential twin screw extruder [J].Food & Machinery,2024,40(4):59-64,83.
[4] MALIK M,KALYON D M,GOLBA J C.Simulation of co-rotating twin screw extrusion process subject to pressure-dependent wall slip at barrel and screw surfaces:3D FEM analysis for combinations of forward- and reverse-conveying screw elements [J].International Polymer Processing,2014,29(1):51-62.
[5] 张超,樊瑜瑾,田野.啮合同向双螺杆挤出机滑移条件下的仿真分析 [J].塑料科技,2019,47(8):71-75.ZHANG C,FAN Y J,TIAN Y.Simulation analysis of meshing co-direction twin-screw extruder under slip condition [J].Plastics Science and Technology,2019,47(8):71-75.
[6] 张迅,朱向哲,王阁.滑移边界条件对同向啮合三螺杆挤出机混合性能的影响 [J].石油化工高等学校学报,2012,25(4):68-72,76.ZHANG X,ZHU X Z,WANG G.Effect of slip boundary conditions on mixing performance of co-meshing three-screw extruder [J].Journal of Petrochemical Universities,2012,25(4):68-72,76.
[7] 秦升学,陈海明,刘杰,等.壁面滑移条件下 UHMWPE 单螺杆挤出过程有限元模拟 [J].塑料科技,2014,42(6):85-88.QIN X S,CHEN H M,LIU J,et al.Finite element simulation of UHMWPE single screw extrusion process under wall slip condition [J].Journal of Plastics Science and Technology,2014,42(6):85-88.
[8] LEWANDOWSKI A,WILCZYNSKI K.Modeling of twin screw extrusion of polymeric materials [J].Polymers,2022,14(2):274.
[9] 赵玉莲,李鑫,安琪,等.非等温条件下啮合同向双螺杆挤出过程数值模拟分析 [J].食品与机械,2019,35(4):76-79.ZHAO Y L,LI X,AN Q,et al.Numerical simulation analysis of meshing co-directional twin screw extrusion process under non-isothermal conditions [J].Food & Machinery,2019,35(4):76-79.
[10] 徐贤发.全啮合同向双螺杆挤出机螺杆齿形设计及其加工方法研究 [D].天津:天津大学,2008:44.XU X F.Study on screw tooth profile design and machining method of full-meshing co-direction twin screw extruder [D].Tianjin:Tianjin University,2008:44.
[11] WILCZYNSKI K,NASTAJ A,LEWANDOWSKI A,et al.Fundamentals of global modeling for polymer extrusion [J].Polymers,2019,11(12):102-106.
[12] HELMIG J,BEHR M,ELGE TI S.Boundary-conforming finite element methods for twin-screw extruders:unsteady-temperature-dependent-non-Newtonian simulations [J].Computers & Fluids,2019,190:322-336.
[13] WHITE J L,KEUM J,JUNG H,et al.Corotating twin-screw extrusion reactive extrusion-devolatilization model and software [J].Polymer-Plastics Technology and Engineering,2006,45(4):539-548.
[14] 黄志刚,蒋卫鑫,李鑫,等.啮合异向双螺杆挤出机仿真研究[J].包装学报,2019,11(3):9-15.HUANG Z G,JIANG W X,LI X,et al.Simulation research on meshing contrastive twin-screw extruder [J].Journal of Packaging,2019,11(3):9-15.
[15] HU D D,CHEN J N.Numerical simulation of twin-screw extrusion with wall slip [J].Journal of Beijing Institute of Technology,2004,13(1):85-89.
[16] KUMAR P S R,ARUMUGAM S K.Non-Newtonian and non-isothermal numerical modelling of a twin screw hydrogen extruder with slip imposed boundary condition on the screw surface [J].Fusion Engineering and Design,2020,161:11-18,96.
