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A technique for lock-in prediction on a fluid structure interaction of naca 0012 foil with high re

A technique for lock-in prediction on a fluid structure interaction of naca 0012 foil with high re
A technique for lock-in prediction on a fluid structure interaction of naca 0012 foil with high re
A numerical lock-in prediction technique of a NACA 0012 hydrofoil, immersed in a flow having a Re of 3.07x106 is proposed in this paper. The technique observes the foil’s response as part of a fluid-structure interaction analysis. The response is modelled by foil’s vibration which is represented by spring and damper components. The technique identifies and predicts the foil’s lock-in when it vibrates. The prediction is examined using the Phase Averaged Method which employs the Hilbert Transform Method. The aim of this paper is to propose a numerical way to identify a lock-in condition experienced by a NACA 0012 foil in a high Reynolds number flow. The foil’s mechanical properties are selected and its motions are restricted in two modes which are in the pitch and heave directions. The rotational and transverse lock-in modes are identified in the model. The existence of lock-in is verified using pressure distribution plot, the history of trailing edge displacement and fluid regime capture. The history of total force coefficients is also shown to justify the result. The result shows that the technique can predict reliably the lock-in condition on the foil’s interaction. Three main fluid induced vibration frequencies are generated in the interaction. None of them are close to natural frequency of the foil and lock-in is apparently not found in the typical operational condition.
Arini, Nu Rhahida
97ed4c38-80f6-4c1b-9ff0-54bf9828c8c9
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Tan, Mingyi
4d02e6ad-7915-491c-99cc-a1c85348267c
Arini, Nu Rhahida
97ed4c38-80f6-4c1b-9ff0-54bf9828c8c9
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Tan, Mingyi
4d02e6ad-7915-491c-99cc-a1c85348267c

Arini, Nu Rhahida, Turnock, Stephen and Tan, Mingyi (2020) A technique for lock-in prediction on a fluid structure interaction of naca 0012 foil with high re. EMITTER International Journal of Engineering Technology. (doi:10.24003/emitter.v8i2.543).

Record type: Article

Abstract

A numerical lock-in prediction technique of a NACA 0012 hydrofoil, immersed in a flow having a Re of 3.07x106 is proposed in this paper. The technique observes the foil’s response as part of a fluid-structure interaction analysis. The response is modelled by foil’s vibration which is represented by spring and damper components. The technique identifies and predicts the foil’s lock-in when it vibrates. The prediction is examined using the Phase Averaged Method which employs the Hilbert Transform Method. The aim of this paper is to propose a numerical way to identify a lock-in condition experienced by a NACA 0012 foil in a high Reynolds number flow. The foil’s mechanical properties are selected and its motions are restricted in two modes which are in the pitch and heave directions. The rotational and transverse lock-in modes are identified in the model. The existence of lock-in is verified using pressure distribution plot, the history of trailing edge displacement and fluid regime capture. The history of total force coefficients is also shown to justify the result. The result shows that the technique can predict reliably the lock-in condition on the foil’s interaction. Three main fluid induced vibration frequencies are generated in the interaction. None of them are close to natural frequency of the foil and lock-in is apparently not found in the typical operational condition.

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Published date: 30 December 2020

Identifiers

Local EPrints ID: 448804
URI: http://eprints.soton.ac.uk/id/eprint/448804
PURE UUID: 410e101c-c122-4def-bd1e-c72d2f021df2
ORCID for Stephen Turnock: ORCID iD orcid.org/0000-0001-6288-0400

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Date deposited: 06 May 2021 16:30
Last modified: 13 Dec 2021 02:34

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Contributors

Author: Nu Rhahida Arini
Author: Stephen Turnock ORCID iD
Author: Mingyi Tan

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