PFLOTRAN

What is PFLOTRAN?

PFLOTRAN is an open source, state-of-the-art massively parallel subsurface flow and reactive transport code. PFLOTRAN solves a system of generally nonlinear partial differential equations describing multiphase, multicomponent and multiscale reactive flow and transport in porous materials. The code is designed to run on massively parallel computing architectures as well as workstations and laptops. Parallelization is achieved through domain decomposition using the PETSc (Portable Extensible Toolkit for Scientific Computation) libraries. PFLOTRAN has been developed from the ground up for parallel scalability and has been run on up to 2^18 processor cores with problem sizes up to 2 billion degrees of freedom. PFLOTRAN is written in object oriented, free formatted Fortran 2003. The choice of Fortran over C/C++ was based primarily on the need to enlist and preserve tight collaboration with experienced domain scientists, without which PFLOTRAN's sophisticated process models would not exist.The reactive transport equations can be solved using either a fully implicit Newton-Raphson algorithm or the less robust operator splitting method.

Capabilities

• Richard's Equation
• Thermo-Hydro-Chemical
• Multiphase Water-Supercritical CO2
• Surface Flow
• Discrete Fracture Network
• Aqueous Complexation
• Sorption
• Mineral Precipitation and Dissolution
• Multiple Continuum for Heat
• Subsurface Flow-Reactive Transport Coupling
• Multiphase Ice-Water-Vapor Flow
• Structured and Unstructured Grids
• Multiple Realizations
• Multiple Inputs
• Parallel I/O

Under Development

• Community Land Model (CLM) Coupling
• Surface-Subsurface Flow Coupling
• Geomechanics
• Multiple continuum for Reactive Transport

License

PFLOTRAN is an open-source software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation either version 2.1 of the License, or (at your option) any later version.