Dynamic break up of soft glassy materials

软玻璃材料的动态破碎

• 批准号: 1939687
• 金额: --
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1939687
• 关键词: Dynamic; break; up; soft; glassy

This project is inspired by current industrial problems encountered whilst drilling bore holes in complex fluids such as clays and muds. Accretion on drilling surfaces has a huge impact on cost and productivity for the oil industry, but there is limited understanding of the fundamental physics. We will experimentally investigate the dynamics of soft glassy materials, consisting of concentrated particle pastes / gels. In particular we will study how the rheological dynamics are affected by key processes such as visco-elasticity and poro-elasticity at different timescales. Using this we hope to build up an understanding of factors which result in cohesive rather than adhesive failure at interfaces. This study will then use this understanding to investigate the dynamic break-up of soft glassy materials and how this leads to interfacial deposition of material on moving surfaces. We will formulate scaling arguments relating the amount of deposition to the underlying rheology and dynamic wetting.

该项目的灵感来自于当前在粘土和泥浆等复杂流体中钻孔时遇到的工业问题。钻井表面的沉积对石油工业的成本和生产率有着巨大的影响，但人们对基本物理学的理解有限。我们将实验研究软玻璃材料的动力学，包括集中的颗粒糊/凝胶。特别是，我们将研究不同时间尺度下黏弹性和孔隙弹性等关键过程如何影响流变动力学。利用这一点，我们希望建立一个了解的因素，导致内聚，而不是粘合剂的界面故障。然后，本研究将利用这种理解来研究软玻璃材料的动态分解，以及这如何导致材料在移动表面上的界面沉积。我们将制定缩放参数相关的沉积量的基础流变学和动态润湿。