Coupling the transport part - MODFLOW 6¶

The MODFLOW side is accessed with pymf6. It Modflowapi and xmipy that, in turn, uses ctypes to access bmi-python, which implements the Basic Model Interface (BMI).

Coupling the reaction part - PHREEQC¶

The PHREEQC is accessed with PhreeqPy that builds on PhreeqcRM.

Architecture¶

This schematics shows how all these parts work together.

rtmf6 is Open Source.

Preprocessing¶

After create a MODFLOW 6 transport model, using a GUI tool or flopy, a preprocessing steps has to be applied. This steps clones the model by coping its input files into different sub-directories. This creates one model for each reaction component. Typically, the components O and H are explicitly model. Therefore, each will be represented by its own sub-directory. This figures shows the how ths preprocessing steps work.

Running¶

The model runs in parallel. Each transportmodel runs its own process, speeding up the execution time considerably. In addition, PhreeqcRM provides parallel execution of the chemical reaction computations.