WinTran - groundwater flow and finite-element contaminant transport model for dispersion, linear sorption (retardation) and first-order decayWinTran Category: solute transport models - saturated zone

Introduction to WinTran

WinTran couples the steady-state groundwater flow model from WinFlow with a contaminant transport model. The transport model of WinTran 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.

Contaminant mass may be injected or extracted in WinTran 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.

WinTran aids in risk assessment calculations by displaying the concentration over time at receptor or observation locations. You simply click to define an observation point and run the simulation. WinTran will display the breakthrough curves after the simulation is finished.

WinTran Features

  • Simulates steady-state flow and transient transport in confined and 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), Windows NT, and Windows 95.
  • Displays Peclet and Courant criteria during transport simulation.
  • Displays mass balance error during simulation.
  • Contours concentration at user-specified time steps during simulation.
  • Plots concentration vs. Time at observation points.
  • Velocities are computed either analytically or using the 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 in WinTran are the same as WinFlow (except transient flow modeling).

WinFlow vs. WinTran

WinTran is, by far, the easiest contaminant transport model to use, especially since it is a true Windows program. WinTran is unique in that it provides you with a sophisticated finite-element transport model that works like an analytic model. All of the finite-element mesh design chores go on behind the scenes, freeing you to work on the conceptual model and to try different solutions to your problem. WinTran incorporates the steady-state flow model from WinFlow and, therefore, looks very much like WinFlow. The primary differences between WinFlow and WinTran are the following:

  • WinTran requires substantially more memory than WinFlow and thus on some systems (< 8 MB of RAM) it will be slower.
  • WinTran does not have WinFlow's transient flow model.

If you plan to do a lot of flow simulation work in addition to transport, we recommend purchasing both WinFlow and WinTran, and we have provided special pricing considerations to allow you to obtain both models cost-effectively.

WinTran Requirements: 32-bit software uses all memory available to Windows; Supports Windows V3.1 (with Win32s), NT, 9X, ME, and 2000

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WinTran Description

Scientific Software Group    P.O. Box 708188   Sandy, Utah 84070
Phone (801) 208-3011   Toll Free (U.S.) 1-866-620-9214    Fax (801) 302-1160    E-mail
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