Master Thesis: Fluid-Structure Interaction with the open-source software preCICE

The partitioned approach to Fluid-Structure Interaction (FSI) simulation offers notable advantages over the monolithic approach, particularly in terms of development time, flexibility, and modularity. However, setting up such simulations can be challenging, especially in black-box coupling scenarios where limited information is provided by the solvers to the coupling library. This work aims to assess the characteristics and performance of the coupling procedures implemented in preCICE, focusing on its integration into the in-house CFD solver FASTEST-3D and the open-source structural solver CalculiX. Data mapping methods will be evaluated using the ASTE testing environment, with particular attention given to RBF-based approaches. Another key objective is to understand the coupling schemes available in preCICE, with an emphasis on quasi-Newton methods. The influence of different coupling configurations with regards to various mapping techniques and coupling scheme combinations will be investigated using standard numerical benchmarks such as the flexible lid-driven cavity problem and the Hron/Turek FSI3 benchmark. These studies will enable a comprehensive performance evaluation on a modern computing cluster, focusing on runtime, scalability, and accuracy. Ultimately, this work aims to advance the understanding of partitioned coupling strategies for FSI problems and to identify best practices for achieving robust and efficient simulations using preCICE.