适应性网格技术在异向双螺杆挤出机中的仿真  

Simulation in counter-rotating twin screw extruder by adaptive grid technology

作　　者：安琪 黄志刚[1,2] 胡淑珍 米国强[1,2] 李贺 AN Qi;HUANG Zhi-gang;HU Shu-zhen;MI Guo-qiang;LI He(School of Artificial Intelligence,Beijing Technology and Business University,Beijing 100048,China;Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evaluation Technology,Beijing 100048,China;Chinese Academy of Agricultural Mechanization Sciences,Beijing 100048,China)

机构地区：[1]北京工商大学人工智能学院,北京100048 [2]塑料卫生与安全质量评价技术北京市重点实验室,北京100048 [3]中国农业机械化科学研究院,北京100048

出　　处：《食品与机械》2021年第4期91-97,共7页Food and Machinery

基　　金：国家重点研发计划项目子课题(编号:2016YFD0400305,2018YFD0400800);北京市自然科学基金—市教委联合资助项目(编号:KZ20180011017)。

摘　　要：将现有的适应性网络技术应用到异向双螺杆挤出机中,利用AutoCAD软件绘制异向螺纹元件的端面型线,并在Solidworks软件上建立相应的三维模型,将几何模型导入Gambit软件进行网格划分,在Polyflow软件中采用适用性网格技术,根据Maxdiv值对流体流道的网格进行局部加密,设计异向双螺杆等温瞬态流动问题的有限元求解任务,研究Maxdiv值对流道的剪切速率场、黏度场和压力场等方面的影响情况,还对比适应性网格技术中网格细化次数对计算资源的影响,并说明该方法在双螺杆挤出过程仿真过程中的应用潜力。Applied the existing adaptive grid technology to the counter-rotating twin-screw extruder,useed Autocad software to draw the end profile of the counter-rotating thread element,and establisheed the corresponding 3 D model on the Solidworks software.Then imported the geometric model Gambit software for mesh generation.Selecting the adaptable mesh technology of Polyflow software,the mesh of the fluid channel is locally densified according to the Maxdiv value.The finite element solution task of isothermal transient flow problem of counter-rotating twin-screw was designed,and the Maxdiv value was also studied.The effects of the value were studied,on the shear rate field,viscosity field,and pressure field of the flow channel.And compared the effects of the number of mesh refinements in the adaptive grid technology on the computing resources.It is showed that Application potential of the method in the twin-screw extrusion process during the simulation.

关 键 词：适应性网格技术 异向双螺杆 Maxdiv 数值分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TH69[自动化与计算机技术—计算机科学与技术]