U.S.-France Cooperative Research: Characterization of Surfactant Mass Transfer Kinetics and their Impact on Confined Multi-Phase Flows

美法合作研究：表面活性剂传质动力学的表征及其对受限多相流的影响

• 批准号: 9217202
• 负责人: Kathleen Stebe
• 金额: $ 1.72万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1997-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9217202&HistoricalAwards=false
• 关键词: U.S.; France; Cooperative; Research; Characterization

This three-year award supports U.S.-France cooperative research in chemical systems involving Kathleen Stebe of Johns Hopkins University, Dominique Langevin of the Ecole Normale Superieure (Paris) and Dominique Barthes-Biesel of Compiegne University of Technology. The investigators will study the effects of surfactant adsorption on fluid particle motions within the context of new applications including: (1) the flow of foams in porous media; (2) thermocapillary migration of bubbles and drops in microgravity fluids processing; and (3) kinetic rate constants for adsorption and desorption of surfactant molecules. Surfactant adsorption and its effects may be important for enhanced oil recovery. The underlying theory is that detergent foams could be used to control the mobility of a displacing fluid in tertiary oil recovery and thereby improve its control for removing oil from rock pores. The U.S. investigator has extensive experience in both theory and experiments in interfacial mechanics, specifically focusing on surfactant related interfacial phenomena. This is complemented by the French investigators' expertise in soft matter physics (surfactants and polymers) and two phase flows. The project will benefit from the Paris group's unique experimental apparatus and light scattering technique for analyzing capillary action at interfaces. A related experiment on gas bubbles and surfactant adsorption will be conducted by the group in Compiegne.

这项为期三年的奖项支持了涉及约翰·霍普金斯大学的凯瑟琳·斯特比（Kathleen Stebe）的化学系统中的美国法人合作研究，而埃格尔·诺曼勒（Ecole Normale Superieure）的多米尼克·兰格文（Dominique Langevin）和科技大学的多米尼克·巴特斯（Dominique Barthes-Biesel）。研究人员将研究表面活性剂吸附对新应用中流体颗粒运动的影响，包括：（1）多孔介质中泡沫的流动； （2）微重力流体加工中气泡和滴剂的热毛细血管迁移； （3）表面活性剂分子吸附和解吸的动力学速率常数。 表面活性剂的吸附及其影响对于增强石油回收可能很重要。 潜在的理论是，可以使用洗涤剂泡沫来控制替换流体在三级石油回收中的迁移率，从而改善了其从岩石孔中去除油的控制。美国研究者在理论和实验方面都有丰富的经验，专门针对表面活性剂相关的界面现象。 法国研究者在软物质物理（表面活性剂和聚合物）和两个相流方面的专业知识得到了补充。 该项目将受益于巴黎集团独特的实验设备和光散射技术，用于分析接口处的毛细管作用。 该组将在Compiegne进行有关气泡和表面活性剂吸附的相关实验。