Vortex-Induced Vibration and Frequency Lock-In of an Airfoil at High Angles of Attack-Reference-Cited by-同舟云学术

Vortex-Induced Vibration and Frequency Lock-In of an Airfoil at High Angles of Attack

Published:2015-08-21 Issue:1 Volume:138 Page:
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Besem Fanny M.¹,Kamrass Joshua D.¹,Thomas Jeffrey P.¹,Tang Deman¹,Kielb Robert E.²

Affiliation:

1. Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708 e-mail:

2. Fellow ASME Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708 e-mail:

Abstract

Vortex-induced vibration is a fluid instability where vortices due to secondary flows exert a periodic unsteady force on the elastic structure. Under certain circumstances, the shedding frequency can lock into the structure natural frequency and lead to limit cycle oscillations. These vibrations may cause material fatigue and are a common source of structural failure. This work uses a frequency domain, harmonic balance (HB) computational fluid dynamics (CFD) code to predict the natural shedding frequency and lock-in region of an airfoil at very high angles of attack. The numerical results are then successfully compared to experimental data from wind tunnel testings.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/doi/10.1115/1.4031134/6195189/fe_138_01_011204.pdf

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