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Simulation of fluid–structure interaction with the interface artificial compressibility method
Author(s) -
Degroote Joris,
Swillens Abigail,
Bruggeman Peter,
Haelterman Robby,
Segers Patrick,
Vierendeels Jan
Publication year - 2009
Publication title -
international journal for numerical methods in biomedical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 63
eISSN - 2040-7947
pISSN - 2040-7939
DOI - 10.1002/cnm.1276
Subject(s) - solver , fluid–structure interaction , compressibility , domain (mathematical analysis) , coupling (piping) , displacement (psychology) , mechanics , fluid dynamics , black box , interface (matter) , constraint (computer aided design) , bifurcation , computer science , physics , mathematical analysis , geometry , mathematics , finite element method , mathematical optimization , mechanical engineering , engineering , nonlinear system , thermodynamics , psychology , bubble , quantum mechanics , artificial intelligence , psychotherapist , maximum bubble pressure method
Partitioned fluid–structure interaction simulations of the arterial system are difficult due to the incompressibility of the fluid and the shape of the domain. The interface artificial compressibility (IAC) method mitigates the incompressibility constraint by adding a source term to the continuity equation in the fluid domain adjacent to the fluid–structure interface. This source term imitates the effect of the structure's displacement as a result of the fluid pressure and disappears when the coupling iterations have converged. The IAC method requires a small modification of the flow solver but not of the black‐box structural solver and it outperforms a partitioned quasi‐Newton coupling of the two black‐box solvers in a simulation of a carotid bifurcation. Copyright © 2009 John Wiley & Sons, Ltd.