The standard package of coupled surface water and subsurface fluid flow simulation is defined as 2 phase fluid flow in GETFLOWS. In this fluid system the interaction among the surface water, subsurface water and air is computed simultaneously.
Seamless surface water flow simulations of river flow, hill slope run-off, overflow from river to floodplain, and so on. A multiple temporospatial resolution of precipitation and atmospheric pressure data can be forced to land surface.
The simultaneous multiphase flow of water, air and NAPL in surface and subsurface can be analyzed. The interaction between fluid phases, such as dissolution and volatilization of gases can be examined.
A coupled simulation of fluid-flow and heat transport in surface and subsurface can be analyzed. It considers the non-isothermal fluid-flow system which takes into account the temperature-dependent fluid property such as viscosity and density. Heat transport processes in simulator are convection by air/water mixed flow, conduction through soil/rock material and heat exchange between fluid phase and the solid phase.
The interaction between the freshwater and seawater at coastal areas is modeled under the density dependent flow analysis. This kind of model is used to analysis the saltwater intrusion and submarine groundwater discharge phenomena (sea floor discharge).
The multiple chemical species in water and gas phases are simultaneously traced in simulation with the interaction of species. The transportation of nutrient pollutant such as nitrogen and phosphorus in watersheds, and the radionuclides transport with multiple decay chains in deep subsurface environments can be analyzed.
The gas migration through soil, rock and other artificial solid materials can be analyzed with the pressure-dependent pore deformation. The flow behavior after gas generation from waste materials and radioactive waste-packages, and gas leakage from embedded pipes can be computed.