Dear FEFLOW User,
We wish you a Merry Christmas, Happy Holidays and a Happy New Year 2014!
We are happy to announce the official release of our new version FEFLOW 6.2 and of the comprehensive book “FEFLOW - Finite Element Modeling of Flow, Mass and Heat Transport in Porous and Fractured Media” written by H.J. G. Diersch and published by Springer!
The Windows installation files and demo data FEFLOW 6.2 as well as the documentation are available for download on our website now. Key codes for the new version have already been sent to all users with current SMA via e-mail. The update packages including installation DVDs will be shipped during the first quarter of 2014.
As a special bonus, the update package will also include a copy of the brand-new FEFLOW book!
Please have a look at the FEFLOW 6.2 Release section below for a list of the highlights of our new version.
We have more exciting news to share with you in this issue:
Once again we wish all of you a prosperous New Year 2014!
Your FEFLOW Team
The new version contains many exciting new features and a large number of smaller improvements:
FePEST that is now included with every FEFLOW license is a graphical user interface for using PEST by John Doherty with FEFLOW models. Its advantages include graphical support during the setup process and immediate graphical feedback on the simulation progress.
With FePEST, parameter estimation or uncertainty analysis tasks can be executed in parallel on many computers - requiring only one single license seat of a Corporate License for FEFLOW!
Subdomain & Storage Budget
Temporal Element Deactivation
During the simulation, elements of the finite-element mesh can be deactivated and reactivated. This makes it easy to simulate time-varying model domain geometry, as encountered in open-pit simulation projects, long-term simulations including morphological changes, etc.
Temporal BC Deactivation
During the simulation, all kinds of boundary conditions can be completely deactivated and reactivated. This makes it possible to turn on and off boundary conditions without additional plug-ins or complicated and inefficient constraints.
Together with element deactivation, this allows for a very flexible handling of mine-pit progress, construction pits, etc.
Random-Walk Particle Tracking
Groundwater Age is a new kind of problem class -
similar to mass or heat transport. Age simulations help to understand travel times, percentages of bank filtration, catchment zones and much more.
With SAMG 2.7, FEFLOW includes the latest developments in this algebraic multigrid solver. Additionally, the FEFLOW-specific settings for SAMG have been adapted to even better match the typical FEFLOW models. With this, FEFLOW reaches a new level of solution performance and stability.
Pardiso (developed by O. Schenk and K. Gärtner) is a parallelized direct solver. As a direct solver, it provides a noniterative exact solution of the equation system, at an often affordable computational cost thanks to parallelization. Pardiso is the new default direct equation system solver.
Excel /Access Files & Geodatabases
Tabular data from Microsoft Excel workbooks and Microsoft Access databases can be used for map display, data import and export. With this, already available data in these formats can be easily used without a need for re-formatting.
Geometries and tabular data in ESRI Geodatabases, PostgreSQL and Oracle databases can be used for map display, data import and export. With the additional possibility of joining and selection on the data, project data, including geographical data, can now be easily stored without redundancies and in one single place.
Settings for Slice, 3D, Supermesh and Cross-section Views can be collected in the new Scene Library. A user defined folder structure can be used to keep things in order.
With this, even large numbers of view settings (including animation settings!) can be easily stored without the overhead of always recreating the respective view windows when loading the model and without the memory demand for keeping them open.
Results Evaluation and Visualization
FEFLOW 6.2 provides an extended set of tools and features for improved results evaluation and visualization.
· 3D spheres and cylinders available as starting locations for field-line analysis
· Péclet Number available in Auxiliary Data
· Predefined user distributions for error norms for flow, mass, age and heat
· Export of georeferenced snapshots from Slice views
· Export of process-variable results for multiple or all stored time steps in *.dac files
· Field lines: Consideration of retardation due to Henry-type sorption
· Option to define Discrete Ranges for parameter coloring (previously undocumented)
· Option to Tolerate Outliers for parameter visualization (previously undocumented)
Map Data Handling
· User-defined folder structure in Maps panel with maps of arbitrary type in each folder
· Filter option for folder and map names in Maps panel
· Quick Parameter Import option for previously exported maps from FEFLOW without the need for parameter links
· Import/export of relative map locations and all map settings from/to map reference files (*.fmr)
· Import/export of map layers from/into *.fml file
· Import/export of layer styles from/into *.fms file
· Automatic loading of exported maps to Maps panel
· List of maps in View Components panel reflects Maps panel structure
Workflow and GUI Improvements
· Auxiliary Spatial Units panel(s)
· Conversion of stored selections into different geometry types
· Copy/paste functionality for chart plots
· Expression Editor with units
· Inspection panel: Separate sections for parameters and map attributes, search/filter options available
· Export option for Discrete Features in the Data panel
· Multi-selection option in Maps, Data and View Components panels for visualization and data export
· Import/export of multiple location sets and selections in the Spatial Units panel
· Isolines with in-line labels in 3D views
· Labelling of line and polygon maps
· Optional display of solver residuals and solver CPU usage in Log panel
· Handling of Discrete Features: Scale conductivity depending on the saturation within the feature
· Additional IFM functions and callbacks
The comprehensive book “FEFLOW - Finite Element Modeling of Flow, Mass and Heat Transport in Porous and Fractured Media” written by H.J. G. Diersch is now published by Springer.
It represents a theoretical textbook and covers a wide range of physical and computational issues in the field of porous/fractured-media modeling. The book starts with a more general theory for all relevant flow and transport phenomena on the basis of the continuum approach, systematically develops the basic framework for important classes of problems (e.g., multiphase/multispecies non-isothermal flow and transport phenomena, variably saturated porous media, free-surface groundwater flow, aquifer-averaged equations, discrete feature elements), introduces finite element techniques for solving the basic multidimensional balance equations, in detail discusses advanced numerical algorithms for the resulting nonlinear and linear problems, and completes with a number of benchmarks, applications and exercises to illustrate the different types of flow, mass and heat transport problems (e.g., subsurface flow and seepage problems, unsaturated-saturated flow, advective-diffusion transport, saltwater intrusion, geothermal and thermohaline flow).
The book is general and will be useful for both students and practitioners in engineering and geosciences as well as in other fields where porous-media flow dynamics and computational methods are of specific concern.
The German User Group Meeting 2014 will be held at the Maritim Hotel in Cologne on March 11-12. This event will act as a platform for professionals working in water resources and municipal water and for the first time also groundwater professionals.
The User Group Meeting will consist in parallel sessions with lots of opportunities for discussions and knowledge sharing about integrated solutions and model coupling.
For more information and registration, please contact Heike Stoschek (firstname.lastname@example.org).
From December 9 to13 the 46th annual Fall Meeting of the American Geophysical Union took place in San Francisco, California. More than 20,000 influential scientists, university teachers and their students participated to present and discuss their research. Among the broad variety of scientific disciplines characterizing the conference, groundwater played an important role with regard to age calculation, geothermal energy, dewatering, reactive transport and uncertainty analysis.
DHI-WASY presented FEFLOW and other MIKE by DHI software at a booth, hereby accounting for an increasing demand for FEFLOW as a tool to address these disciplines in the context of numerical modeling. At the same time we demonstrated and discussed the latest developments that form part of the new version FEFLOW 6.2.
We would like to thank all visitors for their strong interest and the many lively discussions.
We will again offer a large number of FEFLOW training courses all over the world for FEFLOW beginners and advanced modelers. As the FEFLOW 6.2 package includes FePEST - a graphical user interface for using PEST by John Doherty with FEFLOW models – we will also offer specific two-day FePEST training courses for experienced FEFLOW modelers. The FePEST training dates will be published on www.feflow.com/training.html soon.
A list of all already planned FEFLOW training courses organized by DHI-WASY and other DHI offices as well as registration information can be found on: http://www.theacademybydhi.com/Training/CourseCalendar.aspx?url=http://theacademyaddon.dhigroup.com/
Upcoming training courses in 2014 include:
DHI-WASY will present FEFLOW 6.2 and related consulting services at our booth at the GeoTHERM in Offenburg/Germany on February 20 and 21. The GeoTHERM is Europe's leading exposition and congress for shallow and deep geothermal energy.
Visit us at our booth #155 and discuss the latest developments in geothermal modeling with us!
An increasing number of FEFLOW users appreciate an open space for discussions as well as sharing workflows and solutions in the MIKE by DHI forum. To account for FePEST - the new graphical user interface for using PEST with FEFLOW models - a new child board is available in the FEFLOW section of our discussion forum:
During the holiday season (December 24 through January 1) our phone support will not be available. You can contact us again in the usual way from January 2, 2014.
E-mails can still be sent to our central support address email@example.com and we will try to answer your questions as quickly as possible. However, we would like to ask for your understanding that reaction times may be a bit longer than usual.
Thank you for your understanding!
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