| 振动力场作用下三螺杆挤出机计量段中聚合物挤出的模拟 |
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| 引用本文： | 何和智,陈君辉,谢圣明.振动力场作用下三螺杆挤出机计量段中聚合物挤出的模拟[J].中国塑料,2006,20(4):104-107. |
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| 作者姓名： | 何和智 陈君辉 谢圣明 |
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| 作者单位： | 华南理工大学聚合物新型成型装备国家工程研究中心、聚合物成型加工工程教育部重点实验室,广东广州510640 |
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| 基金项目： | “863”计划资助项目（2002AA333100）. |
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| 摘 要： | 建立了同向旋转三螺杆挤出机计量段实际流道真实尺寸的三维非牛顿模型，利用ANSYS软件中的FLOTRAN CFD分析功能对该流场进行数值模拟，分析了振动力场作用下挤出机计量段内的黏度分布、压力分布、速度分布以及振幅对流量的影响，同时与无振动状态的挤出特性进行了比较。研究结果表明：振动力场的引入使熔体黏度和流量呈周期性变化，熔体黏度降低，螺棱两侧压差随振幅增大而增大，剪切作用增强，分散性混合能力和分布性混合能力提高。
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| 关 键 词： | 振动力场 啮合同向三螺杆挤出机 计量段 |
| 文章编号： | 1001-9278（2006）04-0104-04 |
| 收稿时间： | 2005-11-25 |
| 修稿时间： | 2005-11-25 |
Simulation of Polymer Extrusion in Metering Zone of Tri-screw Extruder under Vibration Force Field |
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| HE He-zhi, CHEN Jun-hui, XIE Sheng-ming.Simulation of Polymer Extrusion in Metering Zone of Tri-screw Extruder under Vibration Force Field[J].China Plastics,2006,20(4):104-107. |
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| Authors: | HE He-zhi CHEN Jun-hui XIE Sheng-ming |
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| Affiliation: | The National Engineering Research Center of Novel Equinpment for Polymer Prying, The Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | A three-dimensional non-Newtonian model for the flow field in the metering zone of a co-rotating tri-screw extruder was formulated, which was employed in the simulation through ANSYS/FLOTRAN CFD. The distribution of viscosity, pressure and velocity in the metering zone under vibration force field was analyzed, and the influences of vibration amplitude on the flow were studied and compared with those without vibration. The simulation results showed that with the introduction of vibration into the melt conveying process the value of viscosity and flow varied periodically, meanwhile, the shearing action increased, and then the viscosity of melt decreased and the effect of distribution improved. |
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| Keywords: | vibration force field co-rotating tri-screw extruder metering zone |
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