U.S.-France Cooperative Research: Fluid and Particle Transport in Self-Affine Fractures

9909110 Koplik这个为期三年的美国-法国合作涉及乔尔科普利克和城市学院的研究生，纽约城市大学和让-皮埃尔胡林大学的玛丽和皮埃尔居里在巴黎，法国。 研究人员建议研究几个相互关联的问题，涉及地质断裂系统中的输运现象。 他们将强调孔隙空间的几何形状与断裂的岩石表面和网络的馏分对流体流动和悬浮颗粒的运动的后果。 这项工作的关键几何特征是自仿射性质的裂缝表面和由此产生的相关性的速度场时，流体流过这样的裂缝。 美国调查员为这一合作带来了理论和数字专业知识。 这将得到法国小组进行的关于重建骨折的实验研究的补充。 该项目将促进对地质构造中流体和颗粒运动的理解，并将其应用于供水，碳氢化合物生产和废物处理。 这项工作的动机是对地下水污染和在断裂岩石中安全处置核废料的环境关注。该奖项代表了美国方面向NSF和法国国家科学研究中心（CNRS）提出的联合建议。 NSF将为美国研究员和研究生支付旅费和生活费。 CNRS将支持法国研究人员访问美国。

9909110KoplikThis three-year award for U.S.-France collaboration involves Joel Koplik and a graduate student of the City College, City University of New York and Jean-Pierre Hulin of the University Marie and Pierre Curie in Paris, France. The investigators propose to study several interrelated problems involving transport phenomena in geological fracture systems. They will emphasize the consequences of pore space geometry associated with fractured rock surfaces and networks of fractions on fluid flow and on the motion of suspended particles. The key geometrical feature of this work is the self-affine nature of fracture surfaces and the resulting correlations in the velocity field when fluid flows through such a fracture. The U.S. investigator brings to this collaboration theoretical and numerical expertise. This will be complemented by the experimental studies on reconstructed fractures conducted by the French group. The project will advance understanding of the motions of fluids and particles in geological formations, with application to water supply, hydrocarbon production, and waste disposal. The work is motivated by environmental concerns about groundwater contamination and safe disposal of nuclear waste in fractured rocks. This award represents the U.S. side of a joint proposal to the NSF and the French National Center for Scientific Research (CNRS). NSF will cover travel funds and living expenses for the U.S. investigator and graduate student. The CNRS will support the visits of the French researchers to the United States.