The cost of a partitioned fluid-structure interaction scheme is typically assessed by the number of coupling iterations required per time step, while ignoring the Newton loops within the nonlinear sub-solvers. In this work, we discuss why these singlefield iterations deserve more attention when evaluating the coupling's efficiency and how to find the optimal number of Newton steps per coupling iteration.

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Published on 11/07/21
Submitted on 11/07/21

Volume IS15 - Coupling Strategies in Multi-Physics Codes, 2021
Licence: CC BY-NC-SA license

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