Friday, October 27 2023, 3pm Geology Colloquium - GG Building 200A or via Zoom Special Information: This is a hybrid event (GG room 200A or via Zoom) Colloquium Speaker: Jeffrey Hyman Abstract: In low-permeability fractured media, such as granites and shales, flow and the associated transportof dissolved solutes is controlled primarily by fractures embedded within the rock matrix. The geometry of individual fractures, size and aperture, as well as the network structure determine the structure of the fluid flow field. However, the relevant lengths scales within a fracture network range several orders of magnitude and it is unclear which features of the network influence which flow and transport properties. One tool to investigate theinterplay andinfluence of these multiple scales are discrete fracture network (DFN) models. In this talk, I’ll discuss recent studies that use high-fidelity DFN models that attempt to link flow and transport attributes to physical structures of a fracture network ranging in-fracture aperture variability to network-scale connectivity. Bio: Dr. Jeffrey Hyman is a staff scientist in the Earth and Environmental Sciences Division at Los Alamos National Laboratory. He received his PhD in Applied Mathematics from the University of Arizona in 2014 with a PhD Minor in Hydrology and Water Resources. His research focuses on integrating applied mathematics with the geosciences to advance our understanding of complex subsurface hydrological processes. Through detailed high-fidelity simulations of flow through large, kilometer-scale, fracture networks and small, micrometer-scale, explicit pore microstructures his research group seeks to uncover the connections between flow and transport properties and the underlying geological structures. He leads a team to develop novel tools and algorithms for computational geometry, stochastic processes, numerical analysis, high-performance computing, fluid dynamics, and structural geology. He is the principal developer of dfnWorks (2017 R&D 100 Winner) a cutting edge three-dimensional discrete fracture network modeling suite. He is the director of the Advanced computational Geosciences Initiative (ACGI) at Los Alamos National Laboratory. Host: Charlotte Garing This is a hybrid event, if you are unable to join us in person please join via zoom. Meeting ID: 997 2477 2096 Note: A password is required to join this meeting. Please call the Geology office (706-542-2652) and speak with a representative to obtain the code. Alternatively, a code request can be made to UGA Geology. Jeffrey Hyman Earth and Environmental Sciences Division Los Alamos National Laboratory
