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首页> 外文期刊>Applied Mechanics and Engineering >THE STUDY OF PRESSURE DROPS IN THE FLOW OF A POLYMER MODELED AS A BINGHAM FLUID IN CONICAL CHANNELS
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THE STUDY OF PRESSURE DROPS IN THE FLOW OF A POLYMER MODELED AS A BINGHAM FLUID IN CONICAL CHANNELS

机译：锥形通道中作为Bingham流体的聚合物流动中的压降研究

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Technologies applied in polymers processing are permanently improved due to updating the knowledge on material proprieties, processes and phenomena during the processing. To determine the pressure distribution, one should define the geometrical shape of a channel, in the flow will be held the flow. The aim of calculations carried out is to determine the possibility of mathematical modelling of polymer flows between conical parallel surfaces. In this work, the flow of a polymer in conical channels was considered. To describe a melted polymer the model of a viscoplastic fluid was used but final results were illustrated by a flow of the Bingham fluid. The Bingham fluid chosen to modelling the flow of a polymer may by considered as legitimate, because its use will allow us to illustrate analytical methods of calculations. For the flow configuration and model under consideration the geometrical sizes of the channel and material coefficients of the fluid will be chosen on the basis of experimental data contained in literature. In the article, the on defining dimensionless pressure distribution for the flow in a conical channel as well as in a conical annular channel with the influence of inertia were presented. The results of calculations were introduced in tabular forms as well as in graphic forms.
机译：由于在加工过程中不断更新有关材料特性，工艺和现象的知识，聚合物加工中应用的技术得到了永久性的改进。要确定压力分布，应定义一个通道的几何形状，在流动中将保持流动。进行计算的目的是确定对锥形平行表面之间的聚合物流动进行数学建模的可能性。在这项工作中，考虑了聚合物在锥形通道中的流动。为了描述熔融的聚合物，使用了粘塑性流体的模型，但宾厄姆流体的流动说明了最终结果。选择用来模拟聚合物流动的宾厄姆流体可以被认为是合法的，因为它的使用将使我们能够说明计算的分析方法。对于考虑中的流量配置和模型，将根据文献中包含的实验数据来选择通道的几何尺寸和流体的材料系数。在本文中，介绍了在惯性的影响下，圆锥形通道以及圆锥形环形通道中流体的定义无量纲压力分布。计算结果以表格形式和图形形式引入。

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