SCALABILITY STUDY OF THE PARALLEL PARTITIONED MULTI-PHYSICS SIMULATION FRAMEWORK

Fluid Structure Interaction (FSI) is a multi-physics problem that dominates many engineering and research applications. In this work we present a partitioned FSI framework developed around a number of open-source solvers and an open-source general purpose code coupling library. Fluid dynamics are handled by OpenFOAM and a solid mechanics solution is implemented in FEniCS. A scalable and portable coupling is achieved via the Multiscale Universal Interface (MUI) library that builds an interface between the coupled codes using MPI, with the potential to scale to hundreds of thousand of MPI ranks. The validity and the performance of the framework will be tested via a series of FSI benchmark cases using the UK’s national supercomputing service ARCHER2.