HydroGeoSphere (HGS) is a three-dimensional control-volume finite element simulator which is designed to simulate the entire terrestrial portion of the hydrologic cycle. It uses a globally-implicit approach to simultaneously solve the 2D diffusive-wave equation and the 3D form of Richards’ equation.
To learn more, view our Webinar on Integrated Hydrologic Modelling with HGS.
Simulating natural processes using mathematics is a fairly difficult job,
and these guys have done a very good job of it. It's a fantastic technology, actually. It's ahead of its time.
-Dr. Ranjeet Nagare, Groundwater Scientist - WorleyParsons
HGS also dynamically integrates key components of the hydrologic cycle such as evaporation from bare soil and water bodies, vegetation-dependent transpiration with root uptake, snowmelt and soil freeze/thaw. Features such as macro pores, fractures, and tile drains can either be incorporated discretely or by using a dual-porosity, dual permeability formulation.
Surface and Subsurface
- Surface domain represented as 2-D overland flow
- Subsurface domain consists of 3-D unsaturated/saturated flow
- Surface/subsurface domains interact through physically-based fluid exchange
- Temporally and spatially varying evapotranspiration based on land use
- Impact of snowmelt on hydrologic regime
- Accurate delineation and tracking of the water table position
- Handling of non-ponding or prescribed ponding recharge conditions and seepage faces
- Representation of fractured geologic materials with arbitrary combinations of porous, discretely-fractured, dual-porosity and dual-permeability media for the subsurface
- Accommodation of storage, solute mixing and variable flow distribution along wellbores
- Density-dependent flow and transport
Mass and Heat Transport
- Simulation of non-reactive and reactive chemical species transport, and heat transport in the associated surface and subsurface flow fields
- Accurate handling of fluid and mass exchanges between fractures and matrix including matrix diffusion effects and solute advection in the matrix
- Calculation of water age and solute transit time probabilities
- Fully-implicit coupling approach for all domains provides for a robust, mass conserved solution scheme
- Advanced computational algorithms that allow the code to perform unprecedented, fully-integrated, 3-D simulation/animation on a personal computer
- Adaptive time-stepping schemes with automatic generation and control of time steps
- Fluid and solute mass balance tracking
- Unstructured finite-element grids
For more information on how to obtain a commercial, academic, or classroom copy of HGS please contact firstname.lastname@example.org