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Proposing Institution

Institut für Informatik 5, TU München
Project Manager

Benjamin Uekermann
Boltzmannstr. 3
85748 Garching
Abstract
Multi-physics simulations have a natural need for high performance computing, since the smaller modelling error we get when switching from a single-physics to a multi-physics model is useless if we cannot sustain a high resolution. Yet, bringing multi-physics simulation to massively parallel systems poses new challenges, since many classical concepts do not scale on a large number of processors. We favor a partitioned approach where existing single-physics solvers are reused and coupled together for multi-physics simulations. Thus, we profit from decades of experience and development efforts in every single field, not only in terms of models and numerical methods, but also in terms of scalability, where each discipline might need specific algortihms. We developed the coupling library preCICE, which allows a solver, once preCICE is included, to couple to other solvers in a nearly plug-and-play manner. Sophisticated coupling and mapping algorithms for non-matching grids as well as different communication means are offered. This project proposal follows closely the project “Exascale Simulation of Fluid-Structure-Acoustics Interactions (ExaFSA)”, part of SPPEXA - the German Priority Program 1648 “Software for Exascale Computing”. Here, we want to couple various single-physics solvers that have already proven scalability, to an overall scalable fluid-structure-acoustics interaction simulation. Such simulations are expected to yield new insight in different applications such as the sound design of aircrafts or wind energy plants.

Impressum, Conny Wendler