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Partitioned simulation of fluid-structure interaction on Cartesian grids. (English) Zbl 1213.74110
Bungartz, Hans-Joachim (ed.) et al., Fluid-structure interaction II. Modelling, simulation, optimization. Selected papers based on the presentations at the first international workshop on computational engineering – special topic fluid-structure interactions, Herrsching, Germany, October 2009. Berlin: Springer (ISBN 978-3-642-14205-5/hbk; 978-3-642-14206-2/ebook). Lecture Notes in Computational Science and Engineering 73, 255-284 (2010).
The authors present the simulation of fluid-structure interactions as a special case of surface-coupled multi-physics applications. The coupling tool preCICE (precise Code Interaction Coupling Environment) is developed for such kinds of coupled simulations which aims at maintaining the full flexibility of the partitioned approach and provides a variety of coupling and data mapping functionalities as well as clearly defined interfaces for the implementation of additional variants. From the point of view of computing time and memory requirements, the simulation of the fluid side is the most costly part of fluid-structure interaction simulation. The suggested flow solver, implemented in the PDE framework Peano, achieves very low memory requirements and a high data access efficiency by using the octree-like adaptively refined Cartesian grids. This is essential with memory access becoming a more and more severe bottleneck of any data-intensive simulation. In addition to its memory efficiency, the Peano flow solver offers dynamical grid adaptivity, multigrid solvers, load-balanced domain decomposition, and accurate force computations at the coupling surface.
For the entire collection see [Zbl 1201.76008].

MSC:
74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
76M20 Finite difference methods applied to problems in fluid mechanics
Software:
preCICE; Sundance
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