NDLI: Coupled FSI Simulations of the Interaction of a Flexible Hydrofoil With Large Scale Unsteady Flows

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Abe, H. Lee Robert, L. Campbell Brent, A. Craven Stephen, A. Hambric
Copyright Year	2014
Abstract	Fluid-structure interaction (FSI) effects must be considered when flexible structures are subjected to unsteady flows. Large-scale unsteady flows can excite structural vibrations significantly and cause the fluid flow to be altered by the large amplitude vibrations. In this work, an in-house finite-element structural code FEANL is tightly coupled with the open-source computational-fluid dynamics (CFD) library package OpenFOAM to simulate the interaction of a backward-skewed, flexible hydrofoil with vortical flow structures shed from a large upstream rigid cylinder in the Penn State-ARL 12” water tunnel. To simulate the turbulent flow at a moderate computational cost, hybrid LES-RANS approaches, i.e. Delayed-Detached-Eddy-Simulation (DDES) and k–ω SST-SAS, are used. The hybrid approaches have been widely employed to simulate massively-separated flows at moderately high Reynolds numbers. Both of the turbulence models are used for a coarse mesh CFD-only case (no FSI effects by assuming a rigid structure) to test their capabilities, and the results of the two models are compared. DDES is chosen to simulate a fine mesh CFD-only case to conduct a mesh convergence study, and it is then used for final FSI simulations. The purpose of this work is focused on obtaining computational results; detailed comparisons against experimental data will be made in future work.
File Format	PDF
ISBN	9780791849620
DOI	10.1115/IMECE2014-40368
Volume Number	Volume 13: Vibration, Acoustics and Wave Propagation
Conference Proceedings	ASME 2014 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2014-11-14
Publisher Place	Montreal, Quebec, Canada
Access Restriction	Subscribed
Subject Keyword	Turbulence Vibration Computational fluid dynamics Fluid dynamics Delay differential equations Reynolds number Fluid structure interaction Unsteady flow Hydrofoil Flow (dynamics) Water tunnels Fluids Simulation Dynamics (mechanics) Reynolds-averaged navier–stokes equations Eddies (fluid dynamics) Finite element analysis Vortex flow Flexible structures Cylinders
Content Type	Text
Resource Type	Article

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