MODFLOW 6 Lab: Customizing for Geothermal, Flow, and Transport Modeling

hydrocomputing GmbH & Co. KG

Add new functionality  for flow, transport, and geothermal problems to  MODFLOW 6. Learn how to create your own model with unique features.

TU Bergakademie Freiberg

<p><strong><strong>This event is hybrid, i.e. you can join remotely or come to Freiberg, Germany.</strong></strong></p><h3><strong><strong>Motivation</strong></strong></h3><p><a href="https://www.usgs.gov/software/modflow-6-usgs-modular-hydrologic-model" title="https://www.usgs.gov/software/modflow-6-usgs-modular-hydrologic-model" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">MODFLOW 6</a> provides a powerful tool for modeling of flow, transport, and geothermal processes in the subsurface. Some modeling tasks may be difficult to solve with the standard workflow. For example, the riverbed conductance can depend on the flow direction, i.e. if the river is a gaining or loosing stream. Currently, MODFLOW cannot handle direction-dependent values for riverbed conductance. But <a href="https://pymf6.readthedocs.io/en/latest/readme.html" title="https://pymf6.readthedocs.io/en/latest/readme.html" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">pymf6</a> can extend MODFLOW with a dynamic riverbed conductance that is different for periods of gaining and loosing. Only a few lines of Python code are needed. Furthermore, other models such as analytic flow models or reactive models such as PHREEQC can be coupled with reasonable effort. New boundary conditions with a strong technical component can be added. For example, such a dynamic boundary condition could take the technical specification of a subsurface heat exchanges into account.</p><h3><strong><strong>Target group</strong></strong></h3><p>Groundwater modelers including students, researchers, consultants, administrative staff of environmental agencies</p><h3><strong><strong>What you will learn</strong></strong></h3><ul><li>You will work with <a href="https://pymf6.readthedocs.io/en/latest/readme.html" title="https://pymf6.readthedocs.io/en/latest/readme.html" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">pymf6</a> from the beginning on. The workshop includes:</li><li>Running MODFLOW 6 via pymf6 within a Jupyter Notebook</li><li>Basic basic for working with pymf6</li><li>Inspecting internal MODFLOW values during model run time</li><li>Use case flow: Controlling the well withdraw based on a target groundwater level</li><li>Use case flow: Dynamic river bed conductance for gaining and loosing river sections</li><li>Use case transport: Optimize the pumping rate of hydraulic barrier for containing a contamination</li><li>Use case geothermal: Extend MODFLOW with a thermal Cauchy boundary condition</li><li>Outlook: Coupling analytic solutions to reduce model size</li><li>Outlook: Reactive transport modeling with pymf6</li><li>Q&amp;A: Ask questions about your model customization needs and get answers from author of pymf6</li></ul>