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在剪切下分离的二元流体的相位分离和形学

Daniya Davis¹, Parameshwaran A¹, Bhaskar Sen Gupta¹

¹Vellore Institute of Technology, Department of Physics, School of Advanced Sciences, Vellore, Tamil Nadu 632014, India.

Physical review. E

|August 1, 2025

概括

这项研究使用了分子动力学模拟来探索剪切变形如何影响二元液体混合物. 我们发现,剪切强度的增加会扭曲域,导致异构结构和非牛顿流体行为.

科学领域:

软物质物理学软物质物理学
材料科学材料科学材料科学
计算化学计算化学

背景情况:

了解液体混合物中的相位分离和气质学对于材料设计至关重要.
水力动力学相互作用显著影响多组分流体的行为.

研究的目的:

为了研究简单剪切变形对3D二元液体混合物的相分离和质性质的影响.
量化剪切强度对域增长和结构异质性的影响.

主要方法:

用分子动力学模拟来建模一个三维二元液体混合物.
应用了简单的剪切变形来研究系统的响应.
通过测量沿着流动和剪切方向的域大小来量化结构性异构性.

主要成果:

剪切变形主要是扭曲域,诱导异构结构的形成.
域增长取决于剪切强度.
该系统在低剪速时表现出牛顿式流体行为,在高剪速时过渡到非牛顿式行为.

结论:

剪切流显著改变了二元液体混合物的形态和形学.
在强大的剪切下过渡到非牛顿行为是这个系统的一个关键特征.

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