dfnWorks: A discrete fracture network framework for modeling subsurface flow and transport
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Computational Earth Science Group, Earth and Environmental Sciences Div. and Center for Nonlinear Studies
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Computational Earth Science Group, Earth and Environmental Sciences Div.
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Environmental Sciences Div.
DFNWorks is a parallalized computational suite to generate three-dimensional discrete fracture networks (DFN) and simulate flow and transport. Developed at Los Alamos National Laboratory over the past five years, it has been used to study flow and transport in fractured media at scales ranging from millimeters to kilometers. The networks are created and meshed using dfnGen, which combines fram (the feature rejection algorithm for meshing) methodology to stochastically generate three-dimensional DFNs on the basis of site specific data with the LaGriT meshing toolbox to create a high-quality computational mesh representation, specifically a conforming Delaunay triangulation suitable for high performance computing finite volume solvers, of the DFN in an intrinsically parallel fashion. Flow through the network is simulated in dfnFlow, which utilizes the massively parallel subsurface flow and reactive transport finite volume code pflotran. A Lagrangian approach to simulating transport through the DFN is adopted within dfnTrans, which is an extension of the walkabout particle tracking method to determine pathlines through the DFN. Example applications of this suite in the areas of nuclear waste repository science, hydraulic fracturing and CO2 sequestration are also included.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- 20140002DR; AC52-06NA25396; AC05-00OR22725
- OSTI ID:
- 1227449
- Alternate ID(s):
- OSTI ID: 1237620; OSTI ID: 1245319
- Report Number(s):
- LA-UR-15-21231; PII: S0098300415300261
- Journal Information:
- Computers and Geosciences, Vol. 84, Issue C; ISSN 0098-3004
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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Related Subjects
97 MATHEMATICS AND COMPUTING
discrete fracture networks
subsurface flow and transport
nuclear waste
hydraulic fracturing
CO2 sequestration
42 ENGINEERING
discrete fracture networks
conforming Delaunay triangulation
subsurface flow and transport
fractured porous media
hydraulic fracturing
CO2 sequestration