Friday, September 4, 2015

New AnAqSim Features and Updated Pricing!

Fitts Geosolutions recently released an updated version of AnAqSim, the cutting-edge Analytic Element Method groundwater modeling software package. This release incorporates many new features and makes AnAqSim more powerful and even simpler to use. Some of the key changes include:

  • Adding a new domain type called “confined/unconfined” which switches from a confined domain to an unconfined domain to simulate dewatering of an aquifer.
  • Adding the ability to execute automated runs from the command line, which allows for the incorporation of parameter estimation programs like PEST.
  • Increasing the maximum number of layers from 10 to 14.
  • Adding the ability to change chart axis limits and intervals, make axes logarithmic, and save graph images or data to files.
  • Allowing transient calibration targets.
  • Adding the ability to export data (e.g. heads) that is the basis of a contour plot as an ASCII x,y,z file
  • And many other changes which make AnAqSim even more user friendly.
All of the flexAEM tutorials and training materials have been updated to incorporate these new features and teach you everything you need to know about groundwater flow modeling with AnAqSim. And now, all flexAEM tutorials and tools are available at a reduced price! Not only have we increased savings on each flexAEM product, but the flexAEM team is excited to introduce the new Ultimate Bundle Special, which includes ALL flexAEM tutorials, the flexAEM Model Feature Generator Toolkit, and the AnAqSim Feature Focus series. All for just $100!

Our tutorials are great tools for modelers of all levels, from beginner to expert. The flexAEM Tutorial Series will teach you how to be an AnAqSim pro and you’ll learn some great modeling tips and techniques which apply to any groundwater flow modeling project. Visit us on the web at to get started modeling with the flexAEM system today! For the full list of changes in the newest release of AnAqSim, visit the Fitts Geosolutions website.

Wednesday, August 12, 2015

Check Out The New And Improved Remediation Calculator Toolkit!

The flexAEM Remediation Calculator Toolkit has been revamped and now includes a 12th calculator for the design or optimization of a high permeability interceptor trench containing multiple sumps. This new calculator provides a lot of flexibility when considering a trench remediation design. Our original trench calculator was designed to simply and quickly determine what extraction rate is required to maintain heads in a trench. The new Interceptor Trench with Sumps calculator can be used to perform a more detailed analysis of trench geometry, trench-fill material properties, and sump locations. For example, the new calculator can help you determine the permeability that will be required to maintain flow to the sumps, the number of sumps needed and their optimal placement for differing lengths of trench, and extraction rates required to maintain water levels in and around the trench. The new calculator can be used to simulate a trench of any size or shape, as shown below. 

11 other great calculators are also included in the Remediation Calculator Toolkit, which can be used to design and evaluate groundwater extraction systems, vertical barrier and well systems, permeable reactive barriers, and more. For more information feel free to Contact Us, or visit the flexAEM website to learn more about the Remediation Calculator Toolkit and download a free QuickStart Calculator Demo.

Wednesday, March 11, 2015

Uncover the Power of Multi-Layer AEM Models with the AnAqSim Instructional Series Advanced-1 Training Package

The Advanced-1 Training Package, which was recently added to the AnAqSim Instructional Series, introduces an important new area of AnAqSim’s capabilities: development of multiple layer groundwater flow models.

Unlike simpler AEM models, which generally only allow for one model layer, AnAqSim can incorporate up to 10 model layers. Each layer can have its own aquifer properties, its own hydraulic features (wells, line sources and sinks, recharge or leakage areas, etc.), and its own boundary conditions.  This allows users to create vertically-zoned aquifers, or vertical aquifer-aquitard sequences that can more accurately represent geology within the aquifer domain and can simulate three-dimensional groundwater flow conditions, such as vertical discharge to surface water bodies or flow to partially penetrating features.

Similar in some ways to the new MODFLOW-USG software, AnAqSim allows for flexible layering in a model – allowing more layers to be added in an area of interest, and fewer layers in the far field area, as shown below.

With this additional power and flexibility come some additional requirements for model construction and testing to ensure an accurate solution. The Advanced-1 Tutorial Series was designed to provide users with detailed instruction on how to properly construct complex multi-layer models, as well as tools and methods that should be utilized to analyze model performance and evaluate aquifer response.  Topics covered include:

·        When a multi-layer model may be necessary or advantageous, and how to specify multiple layers in AnAqSim;
·         How and when extraction element basis points are used to represent vertical leakage between layers;
·         Various methods for checking the accuracy of a multi-layer model solution;
·         Tools and techniques for evaluation of 3-D vertical flow conditions;
·         Proper assignment of model elements and sub-domains to accurately represent hydraulic features;
·         How to identify and avoid errors when joining model domains and model elements;
·         Adjustment of model settings to help improve model convergence;
·         How to incorporate and accurately simulate flow conditions within long, narrow domains (e.g. faults); and
·         Advanced pathline tracing techniques.

The concepts for properly constructing and testing a model are demonstrated in the tutorial series by constructing and examining simple, multi-layer models. The series begins with an overview lesson that explains the basic concepts and methods associated with the construction of multi-layer models in AnAqSim. The first tutorial exercise constructs a basic single-layer box model, and then adds multiple aquifer layers and a pumping well to demonstrate how the flow field changes as the model is transitioned from a single layer model with a fully penetrating well, to a multi-layer model with a fully penetrating lens, to a multi-layer model with pumping from a partially penetrating well. Pathline tracing is applied to examine the three-dimensional capture zone in the vicinity of the well screens. The importance of proper basis point spacing, as well as tools that can be utilized to analyze and test model performance, are also demonstrated.

The next set of exercises construct models to examine three-dimensional groundwater flow in a multi-layer area near a shallow river.  These types of groundwater-surface water interaction models are often applied in ecosystem hydrology studies or conjunctive use water management studies. Multiple methods for representation of a river in an AnAqSim multi-layer model are explored (including the use of a line element within an aquifer domain, and a separate narrow domain with a head-dependent flux upper boundary condition), including how the depiction of vertical flow and discharge in the aquifer zone beneath the river is affected when employing each of these methods.

A set of exercises is also included that demonstrates the proper methods for joining an AnAqSim stream element to a lake or pond boundary. 2-D and 3-D models are constructed to explore the proper placement of stream and lake boundary control points. For the multi-layer model, the use of digitized polygon features to efficiently create more refined basis point spacing near surface water boundaries for greater model accuracy is also explored.

Finally, a model of a bedrock aquifer is created that incorporates a long, linear geologic fault feature with higher hydraulic conductivity. This transmissive fault model demonstrates the outstanding performance of a grid-free polyline-element modeling tool like AnAqSim in simulating small-scale high-resolution flow features that are oriented in ways that would be very difficult to design in a grid-based modeling system. The exercise demonstrates the proper techniques for designing these types of features, and employs pathline tracing to examine the effect of the fault on the groundwater flow patterns near the fault and in the vicinity of a nearby pumping well.

These tutorials should provide a great start in getting you familiar with the concepts behind multi-layer AnAqSim model construction and operation, for a variety of common three-dimensional model applications. They cover the basic concepts, provide practical hands-on model building experience, and teach valuable techniques for refining model design in key areas to improve model solution accuracy.

Visit us on the flexAEM website to learn more about the Advanced-1 Training Package and our other Tutorials and Tools today!

Tuesday, January 13, 2015

Introducing flexAEM’s Advanced Graphic Display Tutorials!

The flexAEM team is pleased to announce a new addition to our AnAqSim Instructional Series -- the Advanced Graphic Display Training Package!

This package of tutorials will show you how to get the most out of AnAqSim’s built-in graphics tools, which can give your model output a professional looking polish and help to better convey modeling results to colleagues and clients. The tutorials also demonstrate the link between AnAqSim and EnviroInsite, a powerful, low-cost software package that can be used as a graphical user interface for building and displaying AnAqSim models -- including the full interactive 3D display of AnAqSim pathlines and contours.

Topics covered in the Advanced Graphic Display Training Package include:

An overview of EnviroInsite environmental data visualization software
Using basemaps and the AnAqSim View Manager features to enhance graphical display
Use of basemaps in AnAqSim to guide model boundary and element digitizing
Displaying model results over basemaps in AnAqSim
Using EnviroInsite as a graphical pre- and post-processor to access web map services for basemaps
Digitizing model features in EnviroInsite for import into AnAqSim
Exporting two and three-dimensional AnAqSim model results to EnviroInsite for display and analysis

The Advanced Graphic Display Training Package includes two lessons, four high quality tutorials, all necessary modeling files, and all associated basemaps – everything you need to continue learning to model more complex hydrogeologic systems with AnAqSim!

For more information feel free to Contact Us, or visit the flexAEM website to learn more about the new Advanced Graphic Display tutorial set.