Coupled FSI simulations of the interaction of a flexible hydrofoil with large scale unsteady flows

Abe H. Lee, Robert Lee Campbell, Brent A. Craven, Stephen A. Hambric

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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-03 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.

Original languageEnglish (US)
Title of host publicationVibration, Acoustics and Wave Propagation
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791849620
DOIs
StatePublished - Jan 1 2014
EventASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014 - Montreal, Canada
Duration: Nov 14 2014Nov 20 2014

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume13

Other

OtherASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014
CountryCanada
CityMontreal
Period11/14/1411/20/14

Fingerprint

Hydrofoils
Fluid structure interaction
Unsteady flow
Computational fluid dynamics
Rigid structures
Flexible structures
Flow structure
Turbulence models
Turbulent flow
Flow of fluids
Tunnels
Reynolds number
Costs
Water

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Lee, A. H., Campbell, R. L., Craven, B. A., & Hambric, S. A. (2014). Coupled FSI simulations of the interaction of a flexible hydrofoil with large scale unsteady flows. In Vibration, Acoustics and Wave Propagation (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 13). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2014-40368
Lee, Abe H. ; Campbell, Robert Lee ; Craven, Brent A. ; Hambric, Stephen A. / Coupled FSI simulations of the interaction of a flexible hydrofoil with large scale unsteady flows. Vibration, Acoustics and Wave Propagation. American Society of Mechanical Engineers (ASME), 2014. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)).
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Lee, AH, Campbell, RL, Craven, BA & Hambric, SA 2014, Coupled FSI simulations of the interaction of a flexible hydrofoil with large scale unsteady flows. in Vibration, Acoustics and Wave Propagation. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), vol. 13, American Society of Mechanical Engineers (ASME), ASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014, Montreal, Canada, 11/14/14. https://doi.org/10.1115/IMECE2014-40368

Coupled FSI simulations of the interaction of a flexible hydrofoil with large scale unsteady flows. / Lee, Abe H.; Campbell, Robert Lee; Craven, Brent A.; Hambric, Stephen A.

Vibration, Acoustics and Wave Propagation. American Society of Mechanical Engineers (ASME), 2014. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 13).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - 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-03 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.

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Lee AH, Campbell RL, Craven BA, Hambric SA. Coupled FSI simulations of the interaction of a flexible hydrofoil with large scale unsteady flows. In Vibration, Acoustics and Wave Propagation. American Society of Mechanical Engineers (ASME). 2014. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)). https://doi.org/10.1115/IMECE2014-40368