Evolution and breakup of a tiny viscoelastic tracer droplet conveyed by another viscoelastic matrix fluid in a novel dual-speed, co-rotating, non-twin screw extruder with intermeshed multi-perturbation rings was studied to demonstrate the complex flow behavior and improved dispersive mixing. The visualization experiment was performed to reveal the conveying and breakup mechanisms using an aqueous solution of carboxymethyl cellulose aqueous (CMC-Na) as the matrix fluid and a drop of red oil-based ink as the tracer. The flow patterns were observed through a totally transparent barrel and the final morphologies of dispersed tracer filaments collected by a moving pulling film were recorded for statistical calculations. A time-dependent transient model was constructed and the numerical simulation using the finite element method along with the mesh superposition technique was performed to further examine the mixing details.

中文翻译：

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粘弹性液滴在带有多扰动环的双速同向旋转非双螺杆挤出机中的输送和破碎


研究了在具有相互啮合的多扰动环的新型双速、同向旋转、非双螺杆挤出机中由另一种粘弹性基质流体输送的微小粘弹性示踪液滴的演变和分解，以证明复杂的流动行为和改进的分散混合。以羧甲基纤维素水溶液 （CMC-Na） 为基质流体，以一滴红色油性墨水为示踪剂，进行可视化实验，揭示输送和分解机理。通过完全透明的桶观察流动模式，并记录由移动拉膜收集的分散示踪丝的最终形态以进行统计计算。构建了一个瞬态模型，并使用有限元方法和网格叠加技术进行了数值模拟，以进一步检查混合细节。