DFN.lab
A software platform for DFN modelling
"Fractures matter"

DFN.lab is a modular computational suite to deal with three-dimensional Discrete Fracture Network (DFN) models from generation to simulation and analysis of connectivity, flow, mechanical and transport properties. Core modules are developed in C++ for high performances and a Python API is provided for easy use.
Features
DFN Generation
Generate Discrete Frature Network with statistical or genetic rules
Analysis
Provide a full range of analysis from density to spatial organization
Fracture mechanics
Linear elastic properties in and out of fractures
Particle Tracking
Advective transport of particles
Flow
Steady-state and transient flow
Get DFN.lab
Join the community
Read the documentation
Publications
Ascione, S., Lester, D. R., Pinier, B., Le Borgne, T., & Heyman, J. (2026). Cutting and shuffling control mixing in three-dimensional discrete fracture networks. Journal of Fluid Mechanics, 1036, A64. https://doi.org/10.1017/jfm.2026.11623
Darcel, C., Courtois, Q., Svensson, U., Le Goc, R., Pinier, B., Selroos, J.-O., & Davy, P. (2026). Transformation of discrete fracture networks into equivalent continuum models for sparsely fractured rocks: comparing flow-based and geometry-based upscaling for flow and transport. Frontiers in Nuclear Engineering, 5, 1760157. https://doi.org/10.3389/fnuen.2026.1760157
Courtois, Q., Darcel, C., Le Goc, R., Davy, P., Mas Ivars, D., & Sykes, E. (2025). Impact of Tunnel Induced Stress Redistribution on Hydraulic Conductivity in Fractured Rocks. ISRM International Symposium – EUROCK 2025, Trondheim, Norway. Conference paper
Davy, P., Le Goc, R., Darcel, C., Pinier, B., Selroos, J.-O., & Le Borgne, T. (2024). Structural and hydrodynamic controls on fluid travel time distributions across fracture networks. Proceedings of the National Academy of Sciences, 121(47), e2414901121. https://doi.org/10.1073/pnas.2414901121
Darcel, C., Le Goc, R., Lavoine, E., Davy, P., Mas Ivars, D., Sykes, E., & Kasani, H. A. (2024). Coupling stress and transmissivity to define equivalent directional hydraulic conductivity of fractured rocks. Engineering Geology, 342, 107739. https://doi.org/10.1016/j.enggeo.2024.107739
De Simone, S., Darcel, C., Kasani, H. A., Mas Ivars, D., & Davy, P. (2024). The Impact of Size-Dependent and Stress-Dependent Fracture Properties on the Biot and Skempton Coefficients of Fractured Rocks. Rock Mechanics and Rock Engineering, 57, 8929–8950. https://doi.org/10.1007/s00603-024-04038-7
Lavoine, E., Davy, P., Darcel, C., Mas Ivars, D., & Kasani, H. A. (2024). Assessing Stress Variability in Fractured Rock Masses with Frictional Properties and Power Law Fracture Size Distributions. Rock Mechanics and Rock Engineering, 57, 2407–2420. https://doi.org/10.1007/s00603-023-03683-8
De Simone, S., Darcel, C., Kasani, H. A., Mas Ivars, D., & Davy, P. (2023). Equivalent Biot and Skempton Poroelastic Coefficients for a Fractured Rock Mass from a DFN Approach. Rock Mechanics and Rock Engineering, 56, 8907–8925. https://doi.org/10.1007/s00603-023-03515-9
Doolaeghe, D., Darcel, C., Selroos, J.-O., Mas Ivars, D., & Davy, P. (2023). Controls on fracture openness and reactivation in Forsmark, Sweden. Scientific Reports, 13, 6686. https://doi.org/10.1038/s41598-023-33619-9
Davy, P., Le Goc, R., Darcel, C., & Selroos, J.-O. (2023). Scaling of fractured rock flow. Proposition of indicators for selection of DFN based flow models. Comptes Rendus Géoscience, 355, 667–690. https://doi.org/10.5802/crgeos.174
Le Goc, R., Darcel, C., Davy, P., & Selroos, J.-O. (2022). Analysis of the Characteristics of Particle Trajectories in DFN and Consequences on Travel Time Distributions. 3rd International Discrete Fracture Network Engineering Conference, Santa Fe, USA. https://doi.org/10.56952/ARMA-DFNE-22-0048
Furtney, J. K., Thielsen, C., Fu, W., & Le Goc, R. (2022). Surrogate Models in Rock and Soil Mechanics: Integrating Numerical Modeling and Machine Learning. Rock Mechanics and Rock Engineering, 55, 2845–2859. https://doi.org/10.1007/s00603-021-02720-8
De Simone, S., Pinier, B., Bour, O., & Davy, P. (2021). A particle-tracking formulation of advective–diffusive heat transport in deformable fracture networks. Journal of Hydrology, 603, 127157. https://doi.org/10.1016/j.jhydrol.2021.127157
Lavoine, E., Davy, P., Darcel, C., & Mas Ivars, D. (2021). An Analysis of Fracture Network Intersections from DFN Models and Data: Density Distribution, Topology, and Stereology. 3rd International Discrete Fracture Network Engineering Conference, DFNE21-2351, Houston, USA. Conference paper
Doolaeghe, D., Davy, P., Darcel, C., Le Goc, R., & Hyman, J. D. (2021). Assessing Multiscale Discrete Fracture Network Flow with Graphs. 3rd International Discrete Fracture Network Engineering Conference (DFNE21). Conference paper
Doolaeghe, D., Davy, P., Hyman, J. D., & Darcel, C. (2020). Graph-based flow modeling approach adapted to multiscale discrete-fracture-network models. Physical Review E, 102(5), 053312. https://doi.org/10.1103/PhysRevE.102.053312
Lavoine, E., Davy, P., Darcel, C., & Munier, R. (2020). A Discrete Fracture Network Model With Stress-Driven Nucleation: Impact on Clustering, Connectivity, and Topology. Frontiers in Physics, 8, 9. https://doi.org/10.3389/fphy.2020.00009
Le Goc, R., Pinier, B., Darcel, C., Lavoine, E., Doolaeghe, D., De Simone, S., de Dreuzy, J.-R., & Davy, P. (2019). DFN.lab: Software platform for Discrete Fracture Network models. AGU Fall Meeting 2019, San Francisco, USA, H41H-1778. Conference poster
Lavoine, E., Davy, P., Darcel, C., & Le Goc, R. (2019). On the Density Variability of Poissonian Discrete Fracture Networks, with application to power-law fracture size distributions. Advances in Geosciences, 49, 77–83. https://doi.org/10.5194/adgeo-49-77-2019
Davy, P., Darcel, C., Le Goc, R., & Mas Ivars, D. (2018). Elastic Properties of Fractured Rock Masses With Frictional Properties and Power Law Fracture Size Distributions. Journal of Geophysical Research: Solid Earth, 123(8), 6521–6539. https://doi.org/10.1029/2017JB015329
Darcel, C., Davy, P., Le Goc, R., & Mas Ivars, D. (2018). Rock mass effective properties from a DFN approach. 2nd International Discrete Fracture Network Engineering Conference, DFNE2018-780, Seattle, USA. Conference paper
Davy, P., Darcel, C., Le Goc, R., Munier, R., Selroos, J.-O., & Mas Ivars, D. (2018). DFN, Why, How and What For, Concepts, Theories and Issues. 2nd International Discrete Fracture Network Engineering Conference, DFNE2018-310, Seattle, USA. Conference paper
Le Goc, R., Davy, P., Darcel, C., & Selroos, J.-O. (2018). Discrimination of Discrete Fracture Network models using structural and flow data. 2nd International Discrete Fracture Network Engineering Conference, DFNE2018-139, Seattle, USA. Conference paper
Tutorials
Learn how to use DFN.lab with these step by step tutorials
Python and DFN.Lab
Create domain
Tunnels & wells
Create deterministic fractures and DFNs
Input and output DFN files
Stochastic DFN generation
Genetic DFN generation
Hydraulic boundary conditions
Transmissivity generation
Identifying connected structures
Meshing DFNs
Solving flow (steady state)
Solving flow with graphs
Particle tracking
Fracture domains and deformation zones
Team
Discover the DFN.lab team

Romain Le Goc
ITASCA Research Engineer

Caroline Darcel
ITASCA Project Manager

Philippe Davy
CNRS Research Director

