Analysis of adhesion and viscous peeling in fluid-structure interactions

流固耦合中的粘附和粘性剥离分析

• 批准号: 2439645
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2439645
• 关键词: Analysis; adhesion; viscous; peeling; fluid

Diverse fluid-structure interaction problems in materials science, micro-engineering and biotechnology involve the peeling of an elastic body away from a substrate in the presence of a viscous fluid, or the progressive adhesion of such a body to another while expelling intervening fluid. Examples include blistering, delamination and cell adhesion. Recent analysis (Peng & Lister, J. Fluid Mech, 2020) has uncovered a host of different dynamical regimes for spread on a horizontal surface under an elastic sheet. This project will apply that understanding, along with theoretical, numerical and asymptotic methods, to obtain solutions to novel problems in which buoyancy and adhesion by capillary or van der Waals forces play a role. Possible problems to be addressed include: To develop asymptotic solutions for rivulet flow down an incline under an elastic sheet. To investigate the role of finite lateral lengthscale for the cases of cylindrical, elliptical and ribbon-like bodies. To develop solutions for a flexible body falling away from a wall, or dynamics capillary clumping of wet fibres. Where possible, our solutions will be compared with laboratory experiments.

材料科学、微工程和生物技术中的各种流体-结构相互作用问题涉及在粘性流体存在下弹性体从基底上剥离，或者在排出介入流体的同时这种体逐渐粘附到另一个体上。实例包括起泡、分层和细胞粘附。最近的分析（Peng & Lister，J. Fluid Mech，2020）揭示了在弹性片材下的水平表面上传播的许多不同的动力学机制。这个项目将应用这种理解，沿着与理论，数值和渐近方法，以获得解决方案，其中浮力和粘附毛细或货车德瓦尔斯力发挥作用的新问题。可能要解决的问题包括：发展渐近解的溪流流下的倾斜下的弹性片材。研究圆柱体、椭圆体和带状体情况下有限横向长度尺度的作用。为柔性物体从墙上脱落或湿纤维的动态毛细聚集开发解决方案。在可能的情况下，我们的解决方案将与实验室实验进行比较。