In this study, we developed a multiphysics model for simulation of a gas‐assisted melt‐electrospinning (GAME) process, focusing on jet formation and propagation behavior. By numerically calculating the stresses acting on the jet during a single‐nozzle GAME process, the shear viscous stress was identified as the main factor with respect to jet stretch; thus, the relationship between shear viscous stress and jet thickness was investigated. The jet stretch ratio increased sharply when shear viscous stress reached the level at which jet sharpening occurred, leading to stable jet formation. We defined this stress as the critical shear viscous stress to determine stable spinnability. By imposing an electric field distribution calculated for a multi‐nozzle array (number of nozzles, tip‐to‐tip distance, and applied voltage) on the boundary condition of the single‐nozzle GAME simulation model, multinozzle GAME was simulated; this enabled proposal of a spinnability diagram for stable spinning.

中文翻译：

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气体辅助聚合物熔体静电纺丝的数值模拟：大规模生产的多喷嘴系统的参数研究

在这项研究中，我们开发了一个多物理场模型来模拟气体辅助熔体静电纺丝（GAME）过程，重点是射流的形成和传播行为。通过数值计算在单喷嘴GAME过程中作用在射流上的应力，剪切粘性应力被确定为射流拉伸的主要因素。因此，研究了剪切粘性应力与射流厚度之间的关系。当剪切粘性应力达到发生喷流锐化的水平时，喷流拉伸比急剧增加，从而导致稳定的喷流形成。我们将此应力定义为确定稳定可纺性的临界剪切粘性应力。通过施加为多喷嘴阵列计算的电场分布（喷嘴数量，尖端到尖端的距离，和施加电压）在单喷嘴GAME仿真模型的边界条件下，模拟了多喷嘴GAME；这为稳定纺纱提供了可纺性图表。