A numerical framework for simulatingfluid-structure interaction phenomena
Journal Title: Frattura ed Integrità Strutturale - Year 2014, Vol 8, Issue 29
Abstract
In this paper, a numerical tool able to solve fluid-structure interaction problems is proposed. Thelattice Boltzmann method is used to compute fluid dynamics, while the corotational finite element formulationtogether with the Time Discontinuous Galerkin method are adopted to predict structure dynamics. TheImmersed Boundary method is used to account for the presence of an immersed solid in the lattice fluidbackground and to handle fluid-structure interface conditions, while a Volume-of-Fluid-based method isadopted to take trace of the evolution of the free surface. These ingredients are combined through a partitionedstaggered explicit strategy, according to an efficient and accurate algorithm recently developed by the authors.The effectiveness of the proposed methodology is tested against two different cases. The former investigatesthe dam break phenomenon, involving the modeling of the free surface. The latter involves the vibration regimeexperienced by two highly deformable flapping flags obstructing a flow. A wide numerical campaign is carriedout by computing the error in terms of interface energy artificially introduced at the fluid-solid interface.Moreover, the structure behavior is dissected by simulating scenarios characterized by different values of theReynolds number. Present findings are compared to literature results, showing a very close agreement.
Authors and Affiliations
A. De Rosis, S. De Miranda, C. Burrafato, F. Ubertini
Keywords
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- EP ID EP131746
- DOI 10.3221/IGF-ESIS.29.30
- Views 79
- Downloads 0
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