The Mechanics of Complex Fluids: Drop Breakup and Shear Induced Diffusion Effects in NonNewtonian Fluids

复杂流体力学：非牛顿流体中的液滴破裂和剪切诱导扩散效应

• 批准号: 9523238
• 负责人: L. Gary Leal
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-04-15 至 1999-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9523238&HistoricalAwards=false
• 关键词: Mechanics; Complex; Fluids; Drop; Breakup

CTS-9523238 Leal This experimental study is aimed at understanding the fluid physics which control the microstructural features of suspensions containing either solid particles or drops in a viscoelastic or non-Newtonian suspended liquid. This class of particle-liquid suspensions is a major source of new materials in the polymer processing industry. Different experimental techniques will be used to study suspensions of non-colloidal solid particles in a viscoelastic suspending fluid and emulsions of viqcous or viscoelastic drops. Optical techniques and two complimentary flow devices will be used to explore two critical features encountered in processing flows. The class of suspensions under consideration have the tendency to develop strongly non-uniform particle concentration distributions, and, in some cases the particles spontaneously organize into long chains aligned in the flow direction. A computer- controlled four-roll mill will be adapted to study deformation and breakup for Newtonian and viscoelastic drops in emulsions.

CTS-9523238 Leal本实验研究旨在了解控制粘弹性或非牛顿悬浮液中含有固体颗粒或液滴的悬浮液微观结构特征的流体物理学。这类颗粒-液体悬浮液是聚合物加工工业中新材料的主要来源。不同的实验技术将被用来研究非胶体固体颗粒在粘弹性悬浮液中的悬浮液和粘性或粘弹性液滴的乳液。光学技术和两个互补的流动装置将被用来探索两个关键的特点，在处理流程中遇到的。所考虑的悬浮液的类别具有发展强烈的非均匀颗粒浓度分布的趋势，并且在某些情况下，颗粒自发地组织成在流动方向上排列的长链。计算机控制的四辊磨将用于研究乳液中牛顿和粘弹液滴的变形和破碎。