Key Features

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List of SEEP/W Features

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Comprehensive saturated-unsaturated formulation

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Steady-state or transient flow formulation

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Soil-atmosphere coupling

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Rigorous under-relaxation and convergence strategies

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Convenient initial condition definition

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Density-driven and vapor transfer physics options

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Estimation routines for hydraulic functions

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1D, 2D, axisymmetric and plan view analysis options

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Multi-physics analysis when integrated with TEMP/W, CTRAN/W, or AIR/W

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Complete range of boundary conditions

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Powerful results graphing

KEY FEATURES

BOUNDARY CONDITIONS

SEEP/W supports a range of boundary condition options. Field data or user-specified functional relationships can be inputted to define hydrographs, reservoir fluctuations, rainfall cycles, vegetation effects, or land climate interactions.

MATERIAL PROPERTIES

Hydraulic conductivity and volumetric water content functions can be estimated using built-in functions. The estimation process requires only fundamental information. A saturated-only material model is also available.

SLOPE/W INTEGRATION

Integration of SEEP/W with SLOPE/W makes it possible to analyze the stability of any natural or man-made system subject to transient changes in pore-water pressure.

SATURATED/UNSATURATED

The rigorous saturated/unsaturated formulation of SEEP/W means that even the most demanding flow problems, such as infiltration into dry soil or seepage through complex upstream tailings dams, can be analyzed with ease.

SEEP/W MODELS A FULL RANGE OF GROUNDWATER PROBLEMS
GROUNDWATER FLOW SYSTEMS
Understanding the flow dynamics of a hydrogeological system is often the cornerstone of geo-engineering and earth science projects. SEEP/W can be used to analyze small-scale and large-scale groundwater flow systems comprising simple to complex stratigraphy and topography. Integration with CTRAN/W and/or TEMP/W provides the flexibility to incorporate density-dependent and frozen-ground effects on the movement of groundwater.
SUBSURFACE DEWATERING APPLICATIONS
SEEP/W can be used to analyze and design subsurface dewatering systems for civil infrastructure, construction, and mining projects. The axisymmetric formulation is often used to analyze drawdown due to pumping wells or to conduct numerical simulations of drawdown tests. Plan view analysis provides an expedient approach for the design of well-spacing patterns, while the rigorous 2D formulation provides the power to analyze de-watering systems in mine slopes, infrastructure embankments such as bridge abutments, construction excavations, and more.
DAMS AND LEVEES
SEEP/W is used worldwide to analyze and design hydraulic structures subjected to a wide-range of anthropogenic and natural forces. From simple homogenous levees to large-scale tailings dams with complex internal drainage systems, SEEP/W is able to achieve results for even the most difficult seepage problems. The transient formulation and sophisticated boundary condition options allow SEEP/W to analyze flood events, rapid drawdown, and the effect of severe climate events on the performance of dams and levees.
SOIL COVER DESIGN
The rigorous saturated-unsaturated formulation combined with a sophisticated land-climate interaction boundary condition can be used to model and design cover systems for mining and municipal waste facilities. Integration with CTRAN/W or TEMP/W allows for the analysis of solute and gas transport or thermally-driven vapor flow through cover systems.
VIEWING THE ANALYSIS RESULTS
Once you have solved your seepage analysis, SEEP/W offers many tools for viewing results. Generate contours or x-y plots of any computed parameter, such as head, pressure, gradient, velocity, and conductivity. Velocity vectors show flow direction and rate. Transient conditions can be shown as a changing water table over time. Interactively query computed values by clicking on any node, Gauss region, or flux section. Then prepare the results for your report by adding labels, axes, and pictures, or export the results into other applications such as Microsoft® Excel® for further analysis.
TYPICAL APPLICATIONS
SEEP/W can model almost any groundwater problem, including:

  • Dissipation of excess pore pressure after reservoir drawdown
  • Changes in pore-water pressure conditions within earth slopes due to infiltration of precipitation
  • Mounding of the groundwater table beneath water retention structures such as lagoons and tailings ponds
  • Effect of subsurface drains and injection wells

  • Drawdown of a water table due to pumping from an aquifer
  • Seepage flow quantities into excavations
  • Use AIR/W and consider the true matric suction (Ua-Uw) mechanisms
  • Integrate with TEMP/W and consider flow in freezing and thawing soils
  • plus many more!

THE POWER OF INTEGRATION
SEEP/W offers simple but powerful analytical capabilities when used in combination with other GeoStudio products.
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PWP INTEGRATION WITH SIGMA/W

Excess pore-water pressures generated in SIGMA/W by external loads (e.g., fill placement) can be used as initial conditions in a transient SEEP/W analysis. The simulated dissipation rates can be used to develop construction-staging schedules. SEEP/W pore-water pressures can be used by SIGMA/W to simulate in situ effective stresses.

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INTEGRATED HEAT TRANSFER WITH TEMP/W

Temperature variation throughout the domain may cause density dependent fluid flow, while water movement carries heat and thus, redistributes the temperatures in the domain. Coupling SEEP/W and TEMP/W allows for the simulation of density dependent fluid flow (or free convection) and forced convection heat transfer.

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INTEGRATED SOLUTE TRANSFER WITH CTRAN/W

Water velocity is often an important component of contaminant transport, while concentration variations may cause density dependent fluid flow. Both advection-dispersive contaminant transport and density dependent fluid flow can be modeled by coupling SEEP/W and CTRAN/W.

Details

FORMULATION
SOIL PROPERTIES
The hydraulic conductivity of the soil is a function of the negative pore-water pressure in the unsaturated regions. The rate of change in water content is dependent on the pore-water pressure during transient processes. Hydraulic conductivity can be defined as anisotropic in two orthogonal directions.
ITERATIVE PROCESS
The nonlinear nature of the finite element equations is handled using an efficient radial search iterative scheme. Graphing tools are available at run-time to help you judge if convergence has been achieved. This has proved to be extremely useful in solving highly nonlinear flow systems.
FLUX QUANTITIES
SEEP/W computes the total flux across single or multiple lines drawn through the mesh.
FEATURES

  • Boundary condition types include total head, pressure head, or flux specified as a constant or a function of time; pressure head; transient flux as a function of computed head; review and adjustment of seepage face conditions.
  • Volumetric water content and conductivity functions can be estimated from basic parameters and grain-size functions.
  • Adaptive time stepping to ensure the use of optimal time steps in transient analyses with sudden changes in boundary conditions.
  • Flow path deliniation.
  • And many more!

INTEGRATION WITH OTHER APPLICATIONS
DISSIPATE EXCESS PORE-WATER PRESSURES GENERATED BY SIGMA/W OR QUAKE/W
Excess pore-water pressures generated by static loading (e.g., fill placement) or by dynamic motion during an earthquake can be brought into SEEP/W to study how long it takes to dissipate the excess pressures.
USE SEEP/W PORE-WATER PRESSURES IN SLOPE/W
Using finite element computed pore-water pressures in SLOPE/W makes it possible to deal with highly irregular saturated/unsaturated conditions or transient pore-water pressure conditions in a stability analysis. For example, you can analyze changes in stability as the pore-water pressure changes with time.

Use SEEP/W data inside a CTRAN/W model for contaminant transport, or a TEMP/W model for convective heat transfer analysis.

ENGINEERING METHODOLOGY BOOK
The included SEEP/W engineering methodology book discusses the whys and hows of modeling, as well as the theory and formulations behind the SEEP/W product. Seepage Modeling with SEEP/W is a full-length book about proper modeling techniques: how to think before, during and after setting up and solving a model. The book includes chapters devoted to:

  • Numerical Modeling: What, Why and How
  • Geometry and Meshing
  • Material Models and Properties
  • Bounday Conditions
  • Analysis Types
  • Functions in GeoStudio
  • Numerical Issues
  • Simulation of Flow Nets
  • Visualization of Results
  • Modeling Tips and Tricks
  • Illustrative Examples
  • Theory

Technical Specifications

MINIMUM SYSTEM REQUIREMENTS

  • Microsoft® Windows® 10, Windows® 8.1, Windows® 8, Windows® 7 SP1
  • Intel® Pentium® 4 or better, or AMD Opteron™ or Athlon™ 64 or better. (GeoStudio is optimized for multi-core Intel processors)
  • 1 GB hard disk space
  • 1024×768 screen resolution.
    For 3D features, your graphics card must support Direct3D® Feature Level 10_1 or greater.
    This includes graphics cards such as (and newer than):

    • Nvidia® GT 300
    • ATI® Radeon® HD 4000 Series
    • Intel® HD Graphics 3000/2000
  • Microsoft® .NET 4.0 will be installed automatically if it is missing.

SUPPORTED VIRTUAL MACHINES
The latest release of GeoStudio can be run on these VM platforms:

  • VMware® ESXi™ 5.5 and 6.0
  • VMware® Workstation™ 11 and 12
  • Microsoft® Hyper-V® on Windows Server® 2016, 2012 R2, 2012, and Windows® 10
  • Citrix® XenServer® 6.2, 6.5 and 7.0

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