A High-performance Open-source Solution for Multiphase Fluid-Structure Interaction

A multiphase FSI framework using only open-source software has been developed, utilising components able to run on high-performance computing platforms. A partitioned approach is employed, ensuring a separation of concerns (fluid, structure and coupling), allowing design flexibility and robustness while reducing future maintenance efforts. Multiphase FSI test cases have been simulated and compared with published results and show good agreement. Simulation of a model representing an elastic aircraft wing with a fluid (fuel) sloshing inside is presented. This demonstrates the ability of this multiphase FSI framework in simulating complex and challenging cases involving a free liquid surface.