摘要
造粒模板是切粒系统的主要部位之一,造粒模板内部包括加热通道与物料通道,通道内部流动介质分别为导热油和聚乙烯。探究在同等条件下,导热油进口速度分别为0.01、0.05、0.1 m/s的情况下物料挤出速度与造粒带温度分布的均匀性。应用SolidWorks软件对造粒模板进行三维建模,采用ANSYS软件对聚合物与导热油的流动与传热进行数值模拟,获得了造粒模板的温度分布与流体流场分布。结果表明,导热油的进口速度对造粒模板温度场的影响明显,导热油进口速度在0.01、0.05、0.1 m/s 3个条件下,物料的挤出速度变化不大,造粒带的温差分别为14.08、7.14和5.39℃。在导热油进口速度为0.1 m/s时,造粒带温度分布最均匀。
The granulation template is one of the main parts of the granulation system.The internal graining template includes the heating channel and the material channel,and the internal flow media in the channel are thermal oil and polyethylene respectively.In this paper,we explored the uniformity of material extrusion velocity and particle size zone temperature distribution in the case of 0.01 m/s,0.05 m/s,and 0.1 m/s when other conditions are consistent.The effect of the flow heat transmission process of thermal oil on the temperature and flow fields of the granulation template were investigated.The SolidWorks software was used to model the granulation template in a 3D form,and the ANSYS software was used to numerically simulate the flow and heat transmission of polymer and thermal oil.The temperature and fluid flow field distributions of the granulation template were obtained.The results indicated that the import speed of thermal oil generated a significant effect on the temperature field of the granulation template.The import speeds of thermal oil were 0.01 m/s,0.05 m/s and 0.1m/s under the three conditions,and the extrusion speed of the material did not show a significant change.Moreover,the temperature differences of the granulation belt were 14.08℃,7.14℃,and 5.39℃.The granulation belt exhibited the most uniform temperature distribution at 0.1 m/s for the thermal oil entrance.
作者
牛旭
刘越
张雅静
NIU Xu;LIU Yue;ZHANG Yajing(School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2021年第12期76-80,共5页
China Plastics
关键词
造粒模板
温度场
流场
数值模拟
granulation template
temperature field
flow field
numerical simulation
