Model Expert for Windows

Find the right ground-water model to use for your project


If you are having trouble determining which model to use for your project, try...  Model Expert


Introduction to Model Expert
Why Model Expert?
Using Model Expert
Model Expert Requirements

Don't know what ground-water model is right for you? Having trouble understanding if a model deals with heterogeneous soil, if it will be rigorous enough for your requirements, what operating system it runs under? Get Model Expert and filter through the hundreds of available ground-water models to find the right model for your site! Model Expert gives you full contact information and prices for public domain and proprietary ground-water models. Model Expert has a search on model name capability and an easy-to-use tabbed notebook interface that allows you to quickly find the models you need. The filtering engine instantly displays results in a list that you can click on to get contact information.

Introduction to Model Expert
Model Expert is a program to determine ground-water models available to the public under various criteria. Model Expert can be used to filter down on the following areas:

  • Model availability- public domain or proprietary codes
  • Type of medium- fractured rock, porous media only, or both
  • Simulation type- flow, transport, flow and transport, or soil/aquifer parameter estimators
  • Soil materials- homogeneous soils or heterogeneous systems
  • Soil saturation- saturated, unsaturated conditions or both
  • Aquifer type- confined aquifers, unconfined aquifers or both
  • Fluid phases- multiphase, single phase or both
  • Dimensions- one-, two- and three-dimensional models
  • Chemistry- organics, inorganics and radioactive substances
  • Verification- extensive, moderate and limited
  • Model cost- look at models under a certain dollar value
  • Number of users

You can also search on model title. Categories and descriptions for Model Expert were obtained from individual software developers, the U.S. EPA document "Compilation of Ground-Water Models," U.S. EPA's Simplified Model Archiving and Retrieval Tracker, the USGS, the Center for Subsurface Modeling Support, and the International Ground Water Modeling Center.

Why Model Expert?
Model Expert was developed because of overwhelming customer requests for information on which model to use in certain instances. Along with SSG's fax- back system, Model Expert seemed the best compliment to customers who needed a useful reference for current model information.

Using Model Expert
Model Expert has three main areas to its screen. The upper left-hand tabbed notebook contains groupings for you to filter down on. The right-hand list displays models that currently fit the filter properties you've selected. As you click on more filter choices in the tabbed notebook, attributes selected will be displayed across the bottom of the screen.

The tabbed notebook is the area of Model Expert that you will use to filter down through available models. Each tab has one or two filter items that you click on to activate the filter. The last tab "Contact Info," displays model name, author name, contact name, address, phone, and fax number, if available. You can print this information along with the model description at any time by clicking on the Print Information button, selecting File|Print from the main menu, or right-clicking on the model list.

Availability- This filter tells you whether a model is public domain or proprietary. Clicking on the button next to public domain causes all solely proprietary models to be taken out of the model list on the right-hand side of the screen. Note: Models that are listed under both, meaning they are public domain and proprietary, generally have limited capabilities in the model's public domain form. Public domain models can often be found from other sources for a nominal cost, but generally do not come with technical support. Technical support for public domain models might be much more important than proprietary models because user interfaces for public domain models and user guides tend to be less well developed when compared to many proprietary models.

Medium- This page contains the filter type of Medium. Clicking on this filter will tell you what subsurface medium a model can handle. Click on fractured rock and models displayed will be able to handle the complexities of a fractured medium. Note: Most software that can model fractured conditions will also model porous soil.

Sim Type- The simulation type filter will tell you whether a model simulates flow or transport, flow and transport, or if the model is a parameter estimator.

Soil Char- The soil characteristics page has two filters: materials and saturation. Materials filters out models that can handle heterogeneous soils or ones that can handle only homogeneous soils. Most models that have heterogeneous soil capabilities can also be used on simplified homogeneous sites. The saturation filter lets you know which models can be used in the unsaturated zone, which in the saturated zone, and which can do both.

Aquif/Phase- The Aquifer and Phases page has two filters on it: aquifer type and fluid phases. Aquifer type filters models that can simulate confined, unconfined aquifers, or both. The fluid phases filter displays models that can handle single phase, multiphase fluids, or both.

Dimensions- This filter lists programs that can model the dimension you select. Note: If a model allows 2-D and 3-D, it will be listed when you filter on either two dimensions or three dimensions, but not on one dimension. You cannot assume that all 3-D models automatically allow for lesser dimensions.

Chemistry- The three types of chemicals you can currently filter on are organic, inorganic and radioactive. Note: Model Expert does not have a field to tell you whether or not a model will model degradation of the chemical types, but usually the description will list that capability.

Verification- A qualitative filter supplied either by the software vendors or taken from U.S. EPA tables. An extensively-verified model has been subject to extensive verification, tested for most of its functions and features and verification results are available. A moderately verified code has been subject to partial verification, or tested for selected functions and features, or only selected verification tests are available. Some of the codes have no verification results available and will only appear if this filter is turned off.

Model Cost- For commercial models, the user can input a dollar amount to see what models cost less than that dollar amount. The costs of models listed may vary somewhat but should give the user a good guideline.

Number of Users- While it is very difficult for even commercial model developers to know exactly how many users there are for a given model, this field should give users a good understanding if a model is widely used or not.

Find- Click on the Find button to search for a model name. The right-hand model list will show the closest match for whatever you type in.

Description- Clicking on Description brings up a scroll box with a description of the current model highlighted on the right-hand model list. The scroll box covers the tabbed notebook (designed this way to save space on your screen) until you click on close. To read text not displayed on the screen you can use the scroll bar.

Deactivating Filters- When you want to deactivate a particular filter, you just go to that notebook page and click on Ignore. That attribute will be dropped from the list at the bottom of the screen.

Show All Models- You can mark the check box called Show All Models to display all models in the database no matter what the attributes list has on it. This does not reset your attributes list so when you un-mark that box, your last filter is displayed again in the right-hand list.

Model Expert Requirements: 486/Pentium running Microsoft Windows 3.x and Windows 95 with 4 MB of hard disk space.

Incredible NetworksΤελευταία Ενημέρωση 27 Ιουλίου 2004 - Last Revised on July 27th 2004
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