FSI modeling with the DSD/SST method for the fluid and finite difference method for the structure

We present a fluid–structure interaction (FSI) modeling method based on using the deforming-spatial-domain/stabilized space–time (DSD/SST) method for the fluid mechanics part and a finite difference (FD) method for the structural mechanics part. As the structural mechanics model, we focus on the thi...

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Bibliographic Details
Published in:Computational mechanics 2014-08, Vol.54 (2), p.581-589
Main Author: Tian, Fang-Bao
Format: Article
Language:English
Subjects:
Analysis
Boundary conditions
Classical and Continuum Physics
Computational fluid dynamics
Computational Science and Engineering
Computer simulation
Coupling
Deformation
Engineering
Finite difference method
Fluid flow
Fluid mechanics
Fluids
Gravity
Joining
Mathematical analysis
Mathematical models
Methods
Modelling
Original Paper
Plates (structural members)
Solvers
Theoretical and Applied Mechanics
Uniform flow
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Summary:We present a fluid–structure interaction (FSI) modeling method based on using the deforming-spatial-domain/stabilized space–time (DSD/SST) method for the fluid mechanics part and a finite difference (FD) method for the structural mechanics part. As the structural mechanics model, we focus on the thin-shell model. The fluid mechanics equations with moving boundaries are solved with the DSD/SST method and the thin-shell structural mechanics equation is solved with a FD method, with partitioned coupling between the two parts. The coupling of the DSD/SST and FD solvers makes sure that the boundary conditions on the fluid-structure interface at the end of each time step are matched between the fluid and the structure. A hanging plate in vacuum under gravitational force is performed to validate the structure solver. In addition, a pitching plate in a uniform flow is simulated to validate the FSI solver. The present results are in reasonable agreement with data predicted by other methods.
ISSN:0178-7675
1432-0924
DOI:10.1007/s00466-014-1007-3