摘要：A common approach to solving fluid-structure interaction problems is to solve
each subproblem in a partitioned procedure where time and space discretization
methods could be different. Such a scheme simplifies explicit/implicit
integration and it is in favor of the use of different codes specialized on each
sub-area. In this work a staggered fluid-structure coupling algorithm is
considered. For each time step a "stage-loop" is performed. In the first stage a
high order predictor is used for the structure state, then the fluid and the
structure systems are advanced in that order. In subsequent stages of the loop
each system uses the previously computed state of the other system until
convergence. For weakly coupled problems a stable and efficient algorithm is
obtained using one stage and an accurate enough predictor. For strongly coupled
problems, stability is enhanced by increasing the number of stages in the loop.
If the stage loop is iterated until convergence, a monolithic scheme is
recovered. In addition, two items that are specially important in fluid
structure problems are discussed, namely invariance of the stabilization terms
and dynamic absorbing boundary conditions. Finally, numerical examples are
presented.
