porousScalarTransportFoam tutorials

The examples provided in the directory tutorials/porousScalarTransportFoam-tutorials/ demonstrate the use of the porousScalarTransportFoam solver.

Validation Case: Passive Tracer Injection

This validation case involves the injection of a passive tracer using pre-computed saturation and velocity fields from a steady-state simulation (for further details, refer to the Steady Validation Case - groundwaterFoam). The setup is driven by a constant injection of a passive tracer at the top of the domain, with a flow rate of \(Q = 1.374 \times 10^{-8} \, \text{kg} \cdot \text{m}^{-2} \cdot \text{s}^{-1}\) for a duration of 6622 seconds.

The simulation spans a physical time of approximately \(1.262 \times 10^9\) seconds, which is close to 40 years.

The figure below shows the solute flux exiting the column, comparing results from the porousScalarTransportFoam solver and the METIS solver (our reference solution):

The agreement between both solvers validates the correct implementation of several important factors influencing solute transport, such as heterogeneous saturation, dispersion, decay, and retardation effects.