Original Paper

Computational Mechanics

, Volume 43, Issue 1, pp 61-72

Fixed-point fluid–structure interaction solvers with dynamic relaxation

  • Ulrich KüttlerAffiliated withChair of Computational Mechanics, TU Munich
  • , Wolfgang A. WallAffiliated withChair of Computational Mechanics, TU Munich Email author 

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Abstract

A fixed-point fluid–structure interaction (FSI) solver with dynamic relaxation is revisited. New developments and insights gained in recent years motivated us to present an FSI solver with simplicity and robustness in a wide range of applications. Particular emphasis is placed on the calculation of the relaxation parameter by both Aitken’s \({\Delta^{2}}\) method and the method of steepest descent. These methods have shown to be crucial ingredients for efficient FSI simulations.

Keywords

Fluid–structure interaction Fixed-point solver Dirichlet–Neumman partitioning Strong coupling