Examples

In this example, we simulate tracer transport through a confined aquifer with a randomly distributed permeability field. We first solve the pressure field, compute the steady state flow field, and then solve the tracer transport equation. You learn how to

• generate a randomly distributed permeability field
• sequentially solve two types of problems after each other:
  • solve a one-phase flow in porous media problem
  • compute the flow field from a pressure solution to pass to a tracer problem
  • solve an instationary tracer transport problem with a given flow field

In this example we model a soil contamination problem where DNAPL infiltrates a water-saturated porous medium (two-phase flow). The initial distribution of DNAPL is read in from a txt-file. The grid is adapitvely refined where DNAPL enters the domain, around the plume, and around an injection well. You learn how to

• solve a two-phase flow in porous media problem with two immiscible phases
• set boundary conditions and a simple injection well
• implement a problem with heterogenous material parameters
• use adaptive grid refinement around the saturation front

The shallow water flow model is applied to simulate steady subcritical flow in a channel including a bottom friction model. You learn how to

• solve a shallow water flow problem including bottom friction
• computate and output (VTK) an analytical reference solution

In this example, we simulate a free flow between two plates in two dimensions. You learn how to

• solve a free flow problem
• set outflow boundary conditions in the free-flow context

In this example, a rotation-symmetric solution for the single-phase flow equation is discussed. You learn how to

• solve a rotation-symmetric problem
• perform a convergence test against an analytical solution
• do post-processing in ParaView

In this example, we simulate microbially-induced calcite precipitation You learn how to

• solve a reactive transport model including
  • biofilm growth
  • mineral precipitation and dissolution
  • changing porosity and permeability
• use complex fluid and solid systems
• set a complex time loop with checkpoints, reading the check points from a file
• set complex injection boundary conditions, reading the injection types from a file