受喷嘴几何形状影响的沿纤维下落薄膜流动建模
Modeling film flows down a fibre influenced by nozzle geometry
AI总结:
该研究针对喷嘴几何形状影响沿垂直纤维下落薄膜流动的问题,采用加权残差法建立考虑多物理效应的耦合方程组,可描述近喷嘴结构与下游液珠动力学,且预测结果与实验数据吻合良好。
摘要:
我们研究了喷嘴几何形状对沿垂直圆柱形纤维下落的薄流体薄膜动力学的影响。近期实验表明,改变喷嘴直径会导致薄膜中出现不同的流动状态和液滴特征。我们采用加权残差建模方法,建立了一组耦合方程组,该方程组考虑了惯性、表面张力效应、重力以及薄膜稳定机制,可同时描述近喷嘴处的流体结构和下游的液珠动力学。我们报告称,预测的液滴特性与实验数据吻合良好。
英文摘要:
We study the effects of nozzle geometry on the dynamics of thin fluid films flowing down a vertical cylindrical fibre. Recent experiments show that varying the nozzle diameter can lead to different flow regimes and droplet characteristics in the film. Using a weighted residual modeling approach, we develop a system of coupled equations that account for inertia, surface tension effects, gravity, and a film stabilization mechanism to describe both near-nozzle fluid structures and downstream bead dynamics. We report good agreement between the predicted droplet properties and the experimental data.
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