U.S. participation in the IUTAM Symposium on "Mobile particulate systems: kinematics, rheology and phenomena" Bangalor, India, January 23-27, 2012

美国参加 IUTAM 研讨会“移动颗粒系统：运动学、流变学和现象”，印度班加罗尔，2012 年 1 月 23 日至 27 日

• 批准号: 1147517
• 负责人: L. Gary Leal
• 金额: $ 2.87万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-11-01 至 2012-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1147517&HistoricalAwards=false
• 关键词: U.S.; participation; IUTAM; Symposium; Mobile

1147517PI: LealThis symposium is sponsored by IUTAM (International Union of Theoretical and Applied Mechanics) as one of the approximately 15 chosen by the IUTAM General Assembly for the current two year period. The main themes of this meeting are granular flows, particle-fluid suspensions, and suspensions of flexible and/or swimming cells and microorganisms. Although there have been meetings and workshops on the individual topics, this is the first meeting so far as the proposer is aware that combines these subjects to seek a synergistic interaction, and thus push all of the topical areas forward. Particle and particle-fluid flows are ubiquitous in nature and in industrial processes, yet their mechanics and kinematics is poorly understood. Such an understanding would be of great value in the design and optimization of processes for the chemical, mineral, food and pharmaceutical industries, and also in mitigating the effects of natural disasters such as avalanches and debris flows. Several factors contribute to the lack of understanding of these systems, such as the complex nature of grain interactions (e.g., friction in dry systems, hydrodynamic interactions in suspensions), limited understanding of the statistics of grain interactions and microstructure, and the strong dependence of these properties on the nature of forcing. The emphasis of this meeting will be on the regimes of flow wherein the particles are mobile or free to flow.The mathematical tools and experimental techniques developed for the granular and suspension flows find application in many areas of complex fluids and multiphase flows. Equally, the development of techniques in allied areas of physics and mathematics will find applications in the understanding of particulate flows. As a specific example, rheological models for anisotropic fluids that have been proposed several decades ago for liquid crystalline mesophases now find application in the modeling of dense granular flows. Similarly, the developments of theoretical and computational tools for Stokesian suspensions now find application in the analysis of biological systems such as swimming microorganisms. Thus, fostering interaction between these communities will therefore be of significant benefit to all these areas.

1147517PI: leal本次研讨会由IUTAM（国际理论与应用力学联合会）主办，是IUTAM大会选出的大约15个会议之一，为期两年。本次会议的主题是颗粒流，颗粒流体悬浮液，以及柔性和/或游动细胞和微生物的悬浮液。虽然已经有关于个别主题的会议和研讨会，但这是迄今为止申请人意识到的第一次将这些主题结合起来寻求协同互动，从而推动所有主题领域向前发展的会议。粒子和粒子流体流动在自然界和工业过程中无处不在，但人们对它们的力学和运动学却知之甚少。这种理解对于化学、矿物、食品和制药工业的工艺设计和优化，以及减轻雪崩和泥石流等自然灾害的影响，将具有重大价值。有几个因素导致对这些系统缺乏了解，例如颗粒相互作用的复杂性质（例如，干燥系统中的摩擦，悬浮液中的流体动力相互作用），对颗粒相互作用和微观结构统计的理解有限，以及这些特性对强迫性质的强烈依赖。本次会议的重点将放在流动的制度，其中粒子是移动或自由流动。为颗粒流和悬浮流开发的数学工具和实验技术在复杂流体和多相流的许多领域都有应用。同样，物理和数学相关领域的技术发展也将应用于对微粒流动的理解。作为一个具体的例子，几十年前提出的用于液晶中间相的各向异性流体流变模型现在应用于致密颗粒流动的建模。同样，斯托克悬液的理论和计算工具的发展现在也应用于生物系统的分析，如游动的微生物。因此，促进这些社区之间的相互作用将对所有这些领域都有重大的好处。