US-France Cooperative Research: Fluid and Particulate Transport in Self-affine Fractures

0233255 Koplik这三年的美国奖-法国的合作涉及纽约城市大学城市学院的乔尔科普利克和法国巴黎大学的让-皮埃尔胡林和玛丽和皮埃尔居里。 研究人员建议研究几个相互关联的问题集中在粗糙裂缝的几何形状的分形特征和其中的流体的传输特性之间的关系。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。 该联合项目将在从天然岩石样品复制的透明粗糙表面上进行实验室实验，并在相应的模型分形粗糙几何形状中进行理论和计算研究。 此外，还将与法国地球物理研究所合作，在一个花岗岩采石场进行实地实验。 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将为美国研究人员、博士后研究人员和/或研究生提供差旅费和生活费。 CNRS将支持法国研究人员访问美国。

0233255KoplikThis three-year award for U.S.-France collaboration involves Joel Koplik of 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 centered on the relationship between the fractal characteristics of the geometry of rough fractures and the transport properties of fluids within them. 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 joint program will entail laboratory experiments on transparent rough surfaces copied from natural rock samples with theoretical and computational studies in corresponding model fractally-rough geometries. In addition, field experiments in a granite quarry will be conducted in collaboration with the French Institute for Physics of the Earth. 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, a postdoctoral researcher and/or graduate student. The CNRS will support the visits of the French researchers to the United States.