WinFlow and WinTran

inFlow and WinTran
WinFlow is an interactive, analytical model that simulates two-dimensional steady-state and transient ground-water flow with wells, uniform recharge, circular recharge/discharge areas, and line sources or sinks. The model depicts the flow field using streamlines, particle traces, and water-level contours. WinTran couples the steady-state groundwater flow model from WinFlow with a contaminant transport model.

* WinFlow
* WinTran

WinFlow overview

WinFlow is an interactive, analytical model that simulates two-dimensional steady-state and transient ground-water flow (both confined and unconfined aquifers) with wells, uniform recharge, circular recharge/discharge areas, and line sources or sinks. The model depicts the flow field using streamlines, particle traces, and water-level contours. WinFlow has the same basic capabilities as Geraghty & Miller's QuickFlow software, although many features are different or enhanced.

WinFlow simulates both steady-state and transient flow. The steady-state module simulates ground-water flow in a horizontal plane using analytical functions developed by Strack (1989). The transient module uses equations developed by Theis (1935) and by Hantush and Jacob (1955) for confined and leaky aquifers, respectively.

WinFlow is simple to use and highly interactive, allowing you to create an analytical model in minutes. The software features standard Windows pulldown menus and dialogs to facilitate the model design. Common menu selections and commands are also available on the toolbar. The entire WinFlow manual is available as on-line, context-sensitive help.

WinFlow produces report-quality graphics using any Windows device driver. Output may also be exported to a wide variety of file types, including SURFER, Geosoft, Spyglass, Windows Metafiles, and AutoCAD-compatible DXF files.

WinFlow features

Some of the key features include:

* Simulates both steady-state and transient flow in confined and unconfined aquifers
* Simulates effects of wells, linesinks, ponds, and recharge
* Imports map files in DXF format, QuickFlow format, or ModelCad format
* Simple data input
* Calibration targets and calculation of calibration statistics
* Double-click an element to edit
* Click and drag to reposition elements, streamlines, or particles
* Multiple models may be open at one time
* Cut, copy, and paste elements to/from the clipboard
* Maps may be printed using any Windows device driver
* Full context-sensitive help system (the entire manual is on-line)
* Drag-and-drop input files into the WinFlow window

WinTran
WinTran couples the steady-state groundwater flow model from WinFlow with a contaminant transport model. The transport model has the feel of an analytic model but is actually an embedded finite-element simulator. The finite-element transport model is constructed automatically by the software but displays numerical criteria (Peclet and Courant numbers) to allow the user to avoid numerical or mass balance problems.


WinTran- contaminant transport made easy

Contaminant mass may be injected or extracted using any of the analytic elements, including wells, ponds, and linesinks. In addition, constant concentration elements have been added. WinTran displays both head and concentration contours and concentration may be plotted versus time at selected monitoring locations. The transport model includes the effects of dispersion, linear sorption (retardation), and first-order decay. Other features include:

* Simulates steady-state flow and transient transport in confined & unconfined aquifers
* Simulates effects of wells, linesinks, ponds, and constant concentration sources
* 32-bit software uses all memory available to Windows; Supports Windows V3.1 (with Win32s), NT, 9X, ME, 2000 and XP
* Displays Peclet and Courant criteria during transport simulation
* Displays mass balance error during simulation
* Contours concentration at user-specified time steps during simulation
* Velocities computed either analytically or using finite-element flow model
* Maps may be printed using any Windows device driver
* WYSIWYG printing with print preview and user-defined margins
* Full context-sensitive help system (the entire manual is on-line)
* All other features are the same as WinFlow (except transient flow model)