The Analytical Challenge

Calculation of water balance of groundwater resources is crucial for water supply situations. Influences of rainfall, evaporation, and groundwater pumping rates all influence the amount of water available for drinking water supply. Contaminants which may compromise such water resources development need to be modeled such that their impacts can be ascertained.

The SVOFFICE™ Solution

SVOFFICE™/WR offers the ideal software package for calculation of water balances for regional groundwater flow. Optimizations in the FEHM solver make the software ideally suited for finite element calculations of groundwater flow. Advanced meshing allows layers to pinch-out at random locations. Advanced borehole pumping scenarios may be simulated with hundreds of boreholes. Coupling with SVCHEM™ allows calculation of the movement of contaminants in aquifers. The code can handle millions of nodes and can upscale to computations on supercomputers.

 

  • The Challenge
    Dam designs require the analysis of the flow and stability conditions. Seepage should not exit the downstream face or else piping failure can occur. Complex cross-sections and thin filters can represent challenging conditions to solve numerically. Deformations need to be calculated during construction.

    The Solution
    SVOFFICE™ allows combined seepage and slope stability solutions in both 2D and 3D. Complex cross-sections can be represented in the model by extrusions from 2D to 3D or by building complex non-regular 3D models using SVDESIGNER™. SVSOILS™ can provide estimates of unsaturated soil properties. Deformations during construction can be calculated using SVSOLID™ with a staged construction analysis.

    Software Solutions
    SVFLUX™, SVCHEM™, SVDESIGNER

  • The Challenge
    The design of canals creates interesting issues related to the relationship between the water in the canal and the surrounding flow system. It is often of interest to determine how much flow is coming into or leaving a canal system. There is also the problem of uplift if the surrounding water table is higher than the water level in the canal.

    The Solution
    Numerical modeling of this system offers the following benefits:

    • The effectiveness of various pumping scenarios can be explored,
    • It can be determined how the local groundwater table be affected,
    • The flow to or from a canal can be determined

    Software Solutions
    SVFLUX™, SVHEAT™, SVSOLID™, SVDESIGNER

  • The Challenge
    Modeling the groundwater flow over large regions can be challenging due to the complexity of the represented geometry as well as the potential presence of thin flow layers or aquifers. The extensive 3D models may also be influenced by various pumping wells.

    The Solution
    SVFLUX™GE, GT, WR offer solutions for regional groundwater flow considering thin layers, pinchout of geo-strata as well as the modeling of pumping wells, rivers, and tunnels.

    Software Solutions
    SVFLUX™, SVCHEM™, SVDESIGNER

  • The Challenge
    The pumping of wells both for managing water tables for engineering construction or for water supply requires a calculation of the potential drawdown influence zone. The rebound of such a cone is fundamentally an unsaturated flow issue.

    The Solution
    SVFLUX™ models unsaturated flow and can be utilized in order to determine pumping rates as well as the potential drawdown in 2D or 3D numerical models. Different methodologies are utilized for the representation of pumping wells in GE/GT/WR versions of the software. Unsatutrated flow and pumping well rebound are all calculated rigorously in all packages.

    Software Solutions
    SVFLUX™GE/GT/WR, SVAIR™GE, SVDESIGNER

  • The Challenge
    It is sometimes useful to numerically model situations in which there are two fluids of varying density in the same numerical model. An example of this is modeling saltwater intrusion adjacent to an ocean or modeling the movement of salt saturated solution beneath tailings piles in the potash industry. In either of these situations the density of the fluid is controlled by the concentration of salt in the fluid. As there is a higher concentration, the density of the pore-water increases and there is a resulting downward gradient for this dense pore-water.

    The Solution
    A coupled SVFLUX™/SVCHEM™ model includes the buoyant force influence on the seepage transport due to the change in solution concentration of contaminant transport. Using the new ability of density-dependent flow can improve the accurate simulation of heavy salt water. The new feature has been implemented in 1D, 2D, and 3D models and is enabled to work with the Professional version of SVOFFICE™

    Software Solutions
    SVFLUX™GE/WR, SVCHEM™GE/WR

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