Spatio-temporal variability in the lubrication of complex flows

复杂流动润滑的时空变化

• 批准号: 2267868
• 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: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2267868
• 关键词: Spatio; temporal; variability; lubrication; complex

In many settings, industrial or geophysical, fluid flows of complex shear thinning or yield-stress fluids are laterally extensive so that their behaviour largely reflects a balance between the driving forces and the stress exerted by contact with the substrate. In some cases, that stress condition coupling the flow to the substrate is either unknown, or may be highly variable in time and in space. This project will examine, through a combination of theoretical, experimental and data analysis, what quantitative inferences may be made about the coupling with the substrate through careful study of the surface velocity field. Particular attention will be given to poroelastic or plastic substrates, and their impact on the surface velocity field.

在许多工业或地球物理环境中，复杂剪切稀化或屈服应力流体的流体流动是横向延伸的，使得它们的行为在很大程度上反映了驱动力与通过与基底接触而施加的应力之间的平衡。在某些情况下，将流动耦合到基底的应力条件要么是未知的，要么可以在时间和空间上高度可变。本项目将通过理论、实验和数据分析相结合的方法，通过仔细研究表面速度场，对与基底的耦合进行定量推断。将特别注意多孔弹性或塑料基板，以及它们对表面速度场的影响。

项目成果

Evolution of an elastic blister in the presence of sloping topography

存在倾斜地形时弹性泡的演变

• DOI: 10.1017/jfm.2023.421
• 发表时间: 2023
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: Tobin S