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Simulation of polymer jet motion during melt blowing with phase field method
Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-04-14 , DOI: 10.1177/15280837211006670
Xibo Hao 1 , Zhiying Zhao 1 , Jing Wei 2
Affiliation  

In the past two decades, a number of models have been built to simulate the motion of polymer jet during melt blowing. Unfortunately, the complex interaction between polymer jet and air flow field has been rarely reported. In this work, a phase-field method was applied to simulate the coupling effects between polymer and air flow during melt blowing and the computed results were compared with the results of the model built through level-set method and experimental results. Velocity in the x direction, velocity in the y direction, whipping amplitude and diameter of polymer jet were discussed, respectively. It was found that the velocity predicted by the present model was higher than that predicted by the level-set method. However, both of them are close to the experimental value. The calculated final fiber diameter based on the phase-field method is much closer with the experimental value than that based on the level set method. Based on the model, the effect of polymer surface tension and slot angle on the polymer jet velocity were discussed.



中文翻译:

相场法模拟熔体吹塑过程中聚合物射流运动。

在过去的二十年中,已经建立了许多模型来模拟熔体吹塑过程中聚合物射流的运动。不幸的是,很少报道聚合物射流与空气流场之间的复杂相互作用。在这项工作中,采用相场法模拟了熔喷过程中聚合物与气流之间的耦合效应,并将计算结果与通过水平设定方法建立的模型结果和实验结果进行了比较。速度在X方向上,在速度ÿ分别讨论了聚合物射流的方向,搅动幅度和直径。发现本模型预测的速度高于水平设定法预测的速度。但是,它们都接近实验值。与基于水平设置方法的最终纤维直径相比,基于相场方法计算的最终纤维直径与实验值更加接近。基于该模型,讨论了聚合物表面张力和缝隙角对聚合物射流速度的影响。

更新日期:2021-04-15
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