A variety of multiphysics problems arise in nearly all fields of engineering. Among them, fluid-structure interaction (FSI) represents a natural phenomenon, prominent in the context of lightweight structural engineering. The present work contributes to the research of a stable, robust and effective approach for the staggered numerical simulation of FSI. Extensive numerical investigations of a recently proposed second-order accurate staggered coupling algorithm are presented. To the best of author's knowledge, this is the first work to provide a detailed stability and accuracy assessment of the proposed algorithm in a numerical setup. In order to investigate the accuracy of the algorithm, mesh size and time step refinement studies were performed on a currently published benchmark of elastic membrane on a cavity. Furthermore, a parametric study on choice of coupling parameter with respect to the fluid over mass ratio (added mass effect), was performed. One of the practical outcomes of current work is implementation of the proposed staggered coupling algorithm into the existing co-simulation environment. High efficiency and a promising range of applicability of the coupling algorithm was demonstrated on numerical examples of oscillating beams submerged in laminar ow. In particular, two-dimensional and three-dimensional elastic structures interacting with incompressible ow are considered. The structural field is governed by nonlinear elastodynamic equations, while the dynamics of the fluid field is described by the incompressible Navier-Stokes equations, formulated in an arbitrary Lagrangean-Eulerian approach. Both fields are discretised by finite elements in space and finite difference methods (variations of generalized-? method) in time, whereby the emphasis is put on variational multiscale (orthogonal subscales) formulation of stabilized fluid finite elements.     «

A variety of multiphysics problems arise in nearly all fields of engineering. Among them, fluid-structure interaction (FSI) represents a natural phenomenon, prominent in the context of lightweight structural engineering. The present work contributes to the research of a stable, robust and effective approach for the staggered numerical simulation of FSI. Extensive numerical investigations of a recently proposed second-order accurate staggered coupling algorithm are presented. To the best of autho...     »