Application of foam-extend on turbulent fluid-structure interaction
| Autor: | Bjørn H. Hjertager, Kristen Rege |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Finite volume method
Turbulence business.industry Computer science Computation General Medicine Mechanics Computational fluid dynamics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics 010101 applied mathematics Vibration Flow (mathematics) 0103 physical sciences Fluid–structure interaction Fluid dynamics 0101 mathematics business |
| Zdroj: | IOP Conference Series: Materials Science and Engineering. 276:012031 |
| ISSN: | 1757-899X 1757-8981 |
| Popis: | Turbulent flow around flexible structures is likely to induce structural vibrations which may eventually lead to fatigue failure. In order to assess the fatigue life of these structures, it is necessary to take the action of the flow on the structure into account, but also the influence of the vibrating structure on the fluid flow. This is achieved by performing fluid-structure interaction (FSI) simulations. In this work, we have investigated the capability of a FSI toolkit for the finite volume computational fluid dynamics software foam-extend to simulate turbulence-induced vibrations of a flexible structure. A large-eddy simulation (LES) turbulence model has been implemented to a basic FSI problem of a flexible wall which is placed in a confined, turbulent flow. This problem was simulated for 2.32 seconds. This short simulation required over 200 computation hours, using 20 processor cores. Thereby, it has been shown that the simulation of FSI with LES is possible, but also computationally demanding. In order to make turbulent FSI simulations with foam-extend more applicable, more sophisticated turbulence models and/or faster FSI iteration schemes should be applied. |
| Databáze: | OpenAIRE |
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