Interfacial Dynamics in Displacement Flows of Entangled Polymeric Fluids

缠结聚合物流体位移流中的界面动力学

• 批准号: 0651497
• 负责人: Bamin Khomami
• 金额: $ 20万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-01 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0651497&HistoricalAwards=false
• 关键词: Interfacial; Dynamics; Displacement; Flows; Entangled

National Science Foundation - Division of Chemical &Transport Systems Particulate & Multiphase Processes Program (1415)Proposal Number: 0651497Principal Investigators: Khomami, BaminAffiliation: University of Tennessee, KnoxvilleProposal Title: Interfacial Dynamics in displacement Flows of Entangled Polymeric FluidsIntellectual MeritDisplacement flows are omnipresent in a broad class of multiphase flows and are of tremendous practical application in many fields such as gas assisted injected molding, enhanced oil recovery, production of hollow fiber membranes and coating of substrates. The proposed work will integrate advances in polymer physics, viscoelastic fluid mechanics and computational science to develop a mechanistic understanding of interfacial dynamics in displacement flows of linear and branched polymeric melts. The intellectual merits of the proposed activities include: Comprehensive experimental investigation of the influence of polymer concentration and architecture on the interfacial dynamics of prototypical air-fluid displacement flows. Direct simulation of the interfacial instability of prototypical air-fluid displacement flows of linear and branched entangled polymeric solutions. Determination of the influence of thermal effects (i.e., coupling of viscous heating and the thermal sensitivity of the fluid) on interfacial dynamics of prototypical air-fluid displacement flows of linear and branched entangled polymeric solutions. The proposed research will result in development of experimentally validated hi-fidelity process simulation tools for industrially relevant processes - a field where computational tools are desperately needed to rationalize the design and operation of net shape liquid state processes for commodity and value added products. Broader Impacts The success of present and future technologies and their potential to improve our quality of life depend largely on the creation of a workforce that is well equipped to tackle modern science and engineering challenges. One of our main objectives is to develop a system of instruction, through both classroom and laboratory experiences, for training graduate and undergraduate students in computational material science and engineering. In the past decade, U.S. graduates at all levels of education have significantly fallen behind their European counterparts in this area. Hence, the proposed research/educational program is essential and timely. Diversity and Outreach: Various programs at the University of Tennessee, Knoxville (UTK), e.g., NSF-supported TLSAMP, Pipeline Engineering Diversity Program and GEM will be used to ensure participation of African-American, Hispanic-American, Native-American and female students in this research. We will also utilize the extensive outreach infrastructure at UTK to involve K-12 teachers and high school students in the research program. Internet Based Dissemination: The simulation module, experimental database, technical publications and presentations stemming from this research will be placed on an actively maintained web page. Middleware will be used for web-based execution of the simulation module and data visualization. Industrial Interactions: The coating Industry fully recognizes the value of the proposed research. A close collaboration with 3M Corporation in implementation of the results of this research in an industrial setting is envisioned. Building Research Infrastructure in an EPSCoR State: This proposal will contribute to the further development of a sustainable research infrastructure in Tennessee, in terms of (i) training students, (ii) developing expertise at UT and (iii) strengthening the research network between UTK, Stanford and Danish Technical University.

National Science Foundation - Division of Chemical &Transport Systems Particulate & Multiphase Processes Program (1415)Proposal Number: 0651497Principal Investigators: Khomami, BaminAffiliation: University of Tennessee, KnoxvilleProposal Title: Interfacial Dynamics in displacement Flows of Entangled Polymeric FluidsIntellectual MeritDisplacement flows are omnipresent in a broad class of多相流，并且在许多领域都具有巨大的实际应用，例如气体辅助注入的成型，增强的油回收率，空心纤维膜的产生以及底物的涂层。提出的工作将整合聚合物物理，粘弹性流体力学和计算科学的进步，以对线性和分支聚合物融化的位移流中的界面动力学有一种机械理解。拟议活动的智力优点包括：对聚合物浓度和结构对原型空气流离失所流量界面动力学的影响的全面实验研究。直接模拟线性和分支纠缠聚合物溶液的原型空气流动流的界面不稳定性。测定热效应的影响（即，粘性加热的偶联和流体的热灵敏度）对线性和分支纠缠聚合物溶液的原型空气流体位移流的原型空气流量流的界面动力学。拟议的研究将导致开发经过实验验证的HIFIDELITY过程模拟工具，用于工业相关的过程 - 该领域迫切需要计算工具来合理化商品和增值产品的净形液态状态流程的设计和操作。更广泛的影响现在和未来技术的成功及其改善生活质量的潜力在很大程度上取决于创造一个能够应对现代科学和工程挑战的劳动力的创造。我们的主要目标之一是通过课堂和实验室经验来开发一种教学系统，以培训计算材料科学和工程学的培训研究生和本科生。在过去的十年中，美国各级教育的毕业生在该领域的欧洲同行大大落后于其欧洲同行。因此，拟议的研究/教育计划至关重要且及时。多样性和宣传：田纳西大学，诺克斯维尔大学（UTK）的各种计划，例如NSF支持的TLSAMP，Pipeline Engineering多样性计划和GEM将用于确保非裔美国人，西班牙裔美国人，美国本地裔美国人，美国和女学生参与这项研究。我们还将利用UTK的广泛的外展基础设施，使K-12教师和高中生参与研究计划。基于Internet的传播：这项研究的仿真模块，实验数据库，技术出版物和演示文稿将放置在积极维护的网页上。中间件将用于基于Web的模拟模块和数据可视化的执行。工业互动：涂料行业完全认识到拟议研究的价值。设想了与3M Corporation在实施工业环境中实施这项研究结果的密切合作。在EPSCOR国家的建设研究基础设施：该提案将在田纳西州的可持续研究基础设施的进一步发展中，就（i）培训学生而言，（ii）在UT和（iii）在UTK，Stanford和Danish技术大学之间建立专业知识。