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Features

GETFLOWS simulates Terrestrial Fluid-flow in geosphere. The “Terrestrial Fluids” represents the comprehensive fluid system which consists of surface water such as rivers and lakes, groundwater, and compressible fluids such as air and vapor. GETFLOWS enables fully coupled surface-subsurface water flow simulations and explains such fluid dynamics quantitatively and qualitatively.

The main features of the GETFLOWS are as follows:

  • Fully coupled fluid flow simulation of surface and groundwater (Surface water / subsurface water coupling analysis).
  • Reproduction of flow processes in geo-sphere more naturally.
  • Corner pointed finite difference scheme is employed for the expansion of system equations. Flexibility in assigning surface topography and boundary shapes.
  • Fast and robust matrix solver by preconditioned conjugate residual algorithm which provides easy and quick trials for users.
  • Equipping Solver Locking Process (SLP) which dynamically eliminates the grid block converged in the nonlinear iteration process from the solver.
  • Domain decomposition function – separately calculates the sub domain (grid block groups) significant changes while communicating with surrounding sub domains and total model domain.
  • Flexibility in the application of parallel computation using PC clusters to achieve high speed calculation for several million grid block system.

Representation of the Existing Geo-spherical Fluid System in GETFLOWS Numerical Environment

The target area is represented by an arbitrary-shaped 3D grid block system in GETFLOWS simulator. GETFLOWS analyzes general fluid flow dynamics of water, gas, NAPL (Non-Aqueous Phase Liquid) and solid, such as soil and rock, for each grid block.

Representation of the Existing Geo-spherical Fluid System in GETFLOWS Numerical Environment

Analyzing Water Flow without Boundary

When the precipitation reaches the ground part of it infiltrates into the subsurface, flows as groundwater and partly seeps into to valleys. Then, it flow alone the mountain slopes forming streams. In the areas, where the rain is unable to infiltrate into the ground, it directly runs off as surface water. Such natural behavior of continuous flow of water in surface and subsurface can be simulated in GETFLOWS.

Start Movie (15.2MB, AVI Format)

Analyzing Water Flow without Boundary



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