FEFLOW

FEFLOW is a software package for modeling fluid flow and transport of dissolved constituents and/or heat transport processes in the subsurface. FEFLOW contains pre- and post processing functionality and an efficient simulation engine. A user-friendly graphical interface provides easy access to the extensive modeling options. FEFLOW - in contrast to some of the competing products - is not a graphical front end for a separately developed simulation kernel. It is a completely integrated system from simulation engine to graphical user interface. It includes a public programming interface for user code.

FEFLOW is used by leading research institutes, universities, consulting firms and government organizations all over the world. Its scope of application ranges from simple local-scale to complex large-scale simulations.

Physical Processes

Mathematical qualities Finite-element method (FEM) Discrete feature elements (fractures) Adaptive time stepping Adaptive mesh refinement Fast and stable solvers for large problems Parallel computing
Dimensions 3D 2D horizontal plane 2D vertical plane 2D axisymmetric (meridional) plane
Boundary conditions and material properties Time-constant or transient boundary conditions Time-constant or transient constraints for boundary conditions Time-constant or transient material data distributions

FEFLOW is supplied with an Installation Guide, a detailed User's Manual, a FEFLOW reference manual, and 4 volumes of FEFLOW White Papers, along with installation CD-ROMs. When purchasing a new FEFLOW license, the user will also receive a 1-year Software Maintenance Agreement (SMA) that entitles for free technical support and free updates. The SMA contract is recommended to be renewed every year.

Hardware and Software Requirements

FEFLOW is designed for Microsoft Windows environments as well as for Linux operating systems.
It can be used both on single user workstations and in networks in client/server mode.
The following configurations are recommended as a minimum:

Windows

• Windows XP, 2003 Server, 2008 Server, Vista, Windows 7
• 32-bit or x64 Editions

Linux

• FEFLOW is available for a number of different 32bit and 64bit Linux distributions. Please check the developer's download section for currently available installations. Installation packages for other Linux systems may be available on request (support@dhi-wasy.de).

Graphics:

FEFLOW applies the Open Graphics Library (OpenGL) for hardware-based graphics acceleration. In several cases graphics drivers, especially generic drivers provided with the operating system, do not support OpenGL sufficiently. Thus we recommend to install a specific driver for the installed graphics hardware or updating the graphics driver to the latest version.

Dongles:

FEFLOW is protected by an Aladdin hardware key. Three different versions are in use:

• Hardlock parallel port: Mostly used for older licenses and by users who have been working with FEFLOW for a long time.
• Hardlock USB Key: This hardware key had been distributed for some years as the standard.
• HASP HL – USB: All new licenses since the beginning of 2007 have been delivered with this hardware key. It is now the standard key for DHI-WASY software protection.

Compatibility: The HASP HL key requires the Aladdin driver installed with a recent installation of the FEFLOW license manager NetLM. NetLM is available for download from here: