Presentation Details
Quasi-Newton methods for unstable partitioned fluid-structure interactions
Thursday, 12 Oct 2017; 16:20 - 16:40 in room 7.02
In Session:
MS11-1: Modeling, Simulation, Control and Optimization of Multi-physical Phenomena (Show complete Mini Symposium)
Thursday, 12 Oct 2017; 16:00 - 18:00 in room 7.02
Show complete Session
Simulation Engineering
Fraunhofer Institute for Algorithms and Scientific Computing SCAI
Sankt Augustin, Germany
scapos AG
Sankt Augustin, Germany
Micro Abstract:
The co-simulation software MpCCI offers various coupling algorithms for transient multiphysical applications. For fluid-structure interactions, where the density ratio between fluid and structure is almost 1, instabilities can occur. The presented Quasi-Newton relaxation considers the coupling as a fix point problem, which is solved by the Newton method using approximations of the Jacobian. It stabilizes the co-simulation and reduces the number of iterative coupling steps per time increment.