diff --git a/pages/community/precice-workshop-2024.md b/pages/community/precice-workshop-2024.md index fc7867f3b4..84cdb77993 100644 --- a/pages/community/precice-workshop-2024.md +++ b/pages/community/precice-workshop-2024.md @@ -115,7 +115,7 @@ The cost of lunch, as well as coffee and snacks is included in the registration
Simulation of coupled particle transport and FSI with application in the drilling industry
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Patrick Höhn (@hoehnp), Georg-August-Universität Göttingen Institut für Informatik, Germany

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Patrick Höhn (@hoehnp), Institute for Computer Science, University of Göttingen, Germany

Drilling is essential for the recovery and storage of sub-surface energy, such as oil, gas and geothermal heat. It typically accounts for large parts of the project costs. For optimal drilling operations it is required to achieve an efficient transport of cuttings from the drill-bit to the surface. As drilling often reaches several thousand meters below the surface, in-situ measurements of drilling parameters are very challenging. Therefore, limited field knowledge about the underlying phenomena exists and many investigations rely on simplified laboratory setups and detailed simulations. Besides technical challenges, drilling projects are always very costly, e.g. in case of deep geothermal wells the typically drilling costs account for 50% of the total project costs. Large shares of these costs are caused by non-productive time during the drilling process caused by damages to underground equipment. Particular importance in these fatigue processes are lateral vibrations of the drill string. The research problem studied by the author attempts to evaluate the influence of the cuttings transport on the damping of lateral vibrations, which requires a simulation consisting both of particle transport and fluid-structure interaction. One approach using OpenFOAM and the particle solver XDEM was already presented in previous work. Because the code of XDEM, is not publically available, the author decided to solely use publically available open source libaries for his own approach. OpenFOAM was kept as solid base for the development. A big challenge caused by the community is the limitation that code contributions are usually bound to the OpenFOAM version of the initial development with no adoptions to newer versions. Since the initial design the particle transport is realized using the CFDEM®coupling libarary and the particle solver LIGGGHTS. Both were modified to allow a deformable mesh in LIGGGHTS. The FSI aspect was more recently realized by the FSI-library solids4Foam, which has seen significant changes in version 2. Most significantly it is now compatible with the multi-physics framework preCICE. Inspired by this change, the author realized that preCICE cannot only solve the issue of coupling different codes, but also help to overcome compatibility issues between different OpenFOAM additions to be coupled. Implementing the solvers from CFDEM®coupling-PFM in preCICE would allow a much wider application with other simulation codes for the simulation of coupled particle transport simulations, e.g. solid models in solids4Foam could be easily coupled with all solvers from CFDEM®coupling.