The Mechanics of Complex Fluids; Drop Breakup and Shear Induced Diffusion Effects

该项目支持两个主题的研究，涉及加工流程对复杂流体性质的影响。第一部分关注的是剪切流动中粘性或粘弹性液滴破裂的机制和条件，从而解决了在混合或混合过程中一种流体在另一种流体中分散的基本机制之一。第二部分考察了在浓悬浮液中由于剪切诱导的颗粒迁移效应而产生的速度和浓度分布。在这两种情况下，拟议的研究将主要是实验性的。这项研究的技术意义主要在于为预测加工过程中类似悬浮液的复杂流体中发生的变化提供了基础，以及如何利用加工流程来改变或控制由此类流体生产的材料的总体特性。//

This project supports research on two topics that relate to the effects of processing flows on the properties of complex fluids. The first concerns the mechanisms and conditions for breakup of viscous or viscoelastic drops in shear flows, and thus addresses one of the basic mechanisms by which one fluid is dispersed in another during mixing or blending processes. The second examines the velocity and concentration distributions that occur due to shear-induces particle migration effects in concentrated suspensions. In both cases, the proposed research will be primarily experimental. The technological significance of the investigation is related primarily to the development of a basis for predicting the changes that occur in suspension-like complex fluids during processing, and thus how processing flows may be used to modify or control bulk properties of materials that are produced from such fluids.//