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颗粒流动性的微观起源:一个实验性调查

Rebecca N Poon^1,2, Amalia L Thomas^1,3, Nathalie M Vriend^1,3,4,5

¹BP Institute, University of Cambridge, Madingley Rise, Madingley Road, Cambridge CB3 0EZ, United Kingdom.

Physical review. E

|January 20, 2024

概括

这项研究通过实验验证了颗粒流动性的微观定义,这是颗粒流动的一个关键概念. 它强调了基底边界条件对于颗粒材料中的非局部构成方程的准确性至关重要.

科学领域:

物理物理学物理
工程工程师工程师工程师
材料科学材料科学材料科学

背景情况:

颗粒流动性对于颗粒流量分析中使用的非局部构成方程至关重要.
由于实验室挑战,这些方程的实验验证是有限的.
颗粒流动性的微观起源仍然没有被证明.

研究的目的:

实验验证颗粒流动性的微观定义.
调查基底边界条件对颗粒流理论的影响.

主要方法:

设计用于观察单粒子相互作用的实验设置.
在受控条件下测量颗粒流动力学.
分析数据以将微观行为与宏观流动性相关联.

主要成果:

提供了支持微观定义颗粒流动性的实验证据.
证明了基底边界条件对非局部理论有效性的重大影响.
量化了粒子级力学与散装流体特性之间的关系.

结论:

颗粒流动性的微观定义经过实验验证.
基底边界条件对于精确建模颗粒流量至关重要.
这项工作弥合了微观粒子行为和宏观构成方程之间的差距.

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相关概念视频

Membrane Fluidity

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.